1: -x2 + 5x + 24
-1(x + 4)(x - 6)
-1(x + 3)(x - 8)
-1(x + 2)(x - 12)
2: x2 - 24x + 144
(x - 12)(x - 12)
(x - 12)(x + 12)
(x + 12)(x + 12)
3: x2 - 21x + 108
(x - 11)(x - 9)
(x + 12)(x - 9)
(x - 12)(x - 9)
4: 2x2 - 16x + 32
(2x + 4)(x - 4)
2(x - 4)(x - 4)
(x - 4)(x - 4)
5: 3x2 - 18x - 216
(3x - 12)(x + 6)
3(x - 6)(x + 12)
3(x - 12)(x + 6)
6: 81x2 - 180x + 100
(9x - 10)(9x - 10)
3(9x - 10)(9x - 10)
(9x + 10)(9x - 10)
7: 9x2 + 66x + 121
(3x + 11)(3x + 11)
(3x - 11)(3x + 11)
3(x + 11)(x + 11)
8: 49x2 + 112x + 64
(x + 8)(7x - 8)
7(x + 8)(x + 8)
(7x + 8)(7x + 8)
9: 9x2 + 60x + 100
3(x - 10)(3x + 10)
3(x + 10)(x + 10)
(3x + 10)(3x + 10)
10: 9x2 - 60x + 100
(9x + 10)(9x - 10)
(3x - 10)(3x - 10)
3(x - 10)(x - 10)
11: 2x2 - 5x - 12
(2x + 3)(x - 4)
(2x - 3)(x + 4)
2(x + 3)(x - 4)
12: 25x2 + 35x + 12
(5x + 3)(5x + 4)
5(x + 3)(x + 4)
(5x + 3)(x + 4)
13: 48x2 + 36x - 30
(4x - 3)(4x - 3)
3(x - 3)(4x + 3)
6(2x - 1)(4x + 5)
14: 20x2 - 56x + 32
(50 - 4)(5x - 4)
4(5x - 4)(x - 2)
2(5x - 4)(3x - 4)
15: 8x2 - 40x + 42
2(2x - 7)(2x - 3)
2(2x + 7)(2x + 3)
(2x - 7)(2x - 3)
2007-03-30 11:51:12 · 7 answers · asked by *MaRiSsA* 2 in Science & Mathematics ➔ Mathematics
Hi,
1: -x2 + 5x + 24 Factor out the GCF
-1(x^2-5x-24)
-1(x-8)(x+3)
2: x2 - 24x + 144
(x - 12)(x - 12)
3: x2 - 21x + 108
(x - 12)(x - 9)
4: 2x2 - 16x + 32 Factor out the GCF
2(x - 4)(x - 4)
5: 3x2 - 18x - 216 Factor out the GCF
3(x - 12)(x + 6)
6: 81x2 - 180x + 100
(9x - 10)(9x - 10)
7: 9x2 + 66x + 121
(3x + 11)(3x + 11)
8: 49x2 + 112x + 64
(7x + 8)(7x + 8)
9: 9x2 + 60x + 100
(3x + 10)(3x + 10)
10: 9x2 - 60x + 100
(3x - 10)(3x - 10)
11: 2x2 - 5x - 12
(2x + 3)(x - 4)
12: 25x2 + 35x + 12
(5x + 3)(5x + 4)
13: 48x2 + 36x - 30 Factor out the GCF
6(2x - 1)(4x + 5)
14: 20x2 - 56x + 32 Factor out the GCF
4(5x - 4)(x - 2)
15: 8x2 - 40x + 42 Factor out the GCF
2(2x - 7)(2x - 3)
I hope those help.
2007-03-30 12:10:51 · answer #1 · answered by Pi R Squared 7 · 0⤊ 0⤋
The others are absoluty right. You need a tutor inmediaty. Or just ask your teacher about the theme of factorization. But, since I have the experience of tutoring on High School, I will help you. Here are the answers and the process of how you will work with those exercises.
Good Luck.
1) -x2+5x+24
-[x2-5x-24]
Answer: -1(x-8) (x+3)
2) x2-24+114
Answer: A perfect square: (x-12) (x-12)
3) x2-21x+108
Answer: (x-12) (x-9)
4) 2x2-16x+32
(2x2-8x) (-8x+32)
2x (x-4) -8 (x-4)
Answer: (2x-8) (x-4)
5) 3x2-18x-216
(3x2+18x) (-36x-216)
3x(x+6) - 36(x+6)
(3x-36) (x+6)
Answer: 3 (x-12) (x+6)
6) 81x2-180x+100
√81x2 √100
9x 9(10)(-2) 10
Answer: A perfect square: (9x-10) (9x-10)
7) 9x2+66x+121
√9x2 √121
3x 3(11)(2) 11
Answer: A perfect square: (3x+11) (3x+11)
8) 49x2+112x+64
√49x2 √64
7x 7(8)(2) 8
Answer: A perfect square: (7x+8) (7x+8)
9) 9x2+60x+100
√9x2 √100
3x 3(10)(2) 10
Answer: A perfect square: (3x10) (3x+10)
10) 9x2-60x+100
Answer: A perfect square: (3x-10) (3x-10)
11) 2x2-5x-12
(2x2-8x) (3x-12)
2x(x-4)+3(x-4)
Answer: (x-4) (2x+3)
12) 25x2+35x+12
(25x2+15x) (20x+12)
5x (5x+3)+4(5x+3)
Answer:(5x+3) (5x+4)
13) 48x2+36x-30
(48x2-24x) (60x-30)
24x(2x-1)+30(2x-1)
(2x-1) (24x+30)
Answer:6 (2x-1) (4x+5)
14) 20x2-56x+32
(20x2-40x) (-16x+32)
20x (x-2) -16(x-2)
(20x-16) (x-2)
Answer: 4(5x-4) (x-2)
15) 8x2-40x+42
(8x2-12x) (-28x+42)
4x(2x-3)-14(2x-3)
(4x-14) (2x-3)
Answer: 2(2x-7) (2x-3)
2007-03-30 12:56:49 · answer #2 · answered by sahiris150 2 · 0⤊ 0⤋
1. -1(x-3)(x+8)
2. x-12 x-12
3. x-12 x-9
4. 2 (x-4 )( x-4)
5. 3 ( x-12 )( x+6)
6. 9x-10 9x-10
7. 3x+11 3x+11
8.7x+8 7x+8
9. 3x+10 3x+10
10. 3x-10 3x-10
11. 2x+3 x-4
12. 5x+3 3x+4
13. 6(2x-1)(4x+5)
14.4(5x-4)(x-2)
15. 2(2x-7)(2x-3)
2007-03-30 12:10:59 · answer #3 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
I answer first, and if the answering makes me think of or makes my day, then i'm going to action picture star. i comprehend...that's choosy of me, sorry. o.o yet this way I finally end up pointing my followers and contacts to the *stable stuff* you recognize? ^__^ Or a minimum of i attempt to. yet have a action picture star besides basically for being affected person and records. ^_^
2016-11-25 00:42:31 · answer #4 · answered by ? 4 · 0⤊ 0⤋
You are never going to learn how to do it if you don't do it yourself. Whip out your book and look up the how, then go to it. It's not that difficult. If you need a tutor, they're not hard to come by, but, seriously, you really need to be doing it yourself.
2007-03-30 11:59:29 · answer #5 · answered by lupinesidhe 7 · 0⤊ 0⤋
seriously...do them yourself, go to www.math.com and get online help, get a tutor or pay someone. No one is going to do this crap for free and even then, it's a sad state of affairs. Do the work like everyone else.
2007-03-30 11:57:25 · answer #6 · answered by Erin 3 · 1⤊ 0⤋
nice try. why don't you try doing your own homework like everyone else.
2007-03-30 11:58:56 · answer #7 · answered by Anonymous · 0⤊ 0⤋