how can i find the product? i appreciate your help!
2007-07-01 15:24:52 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
FOIL method. (First Outside Inside Last)
First: 5x * 3x = 15x^2
Outside: 5x * -8 = -40x
Inside: -3 * 3x = -9x
Last: -3 * -8 = 24
15x^2 - 40x - 9x + 24
15x^2 -49x + 24
2007-07-01 15:31:21 · answer #1 · answered by Anonymous · 0⤊ 0⤋
use the property of distribution:
(5x - 3) (3x - 8) =
3x(5x - 3) - 8(5x - 3) =
Applying it again,
5x*3x - 3*3x - (8*5x - 3*8) =
One more time to deal with the - sign:
5x*3x - 3*3x + (- 1)(8*5x - 3*8) =
5x*3x - 3*3x + (- 1)8*5x - (- 1)3*8 =
5x*3x - 3*3x - 8*5x + 3*8 =
(Note the similarity to the F.O.I.L rule)
doing the actual multiplications:
15x^2 - 9x - 40x + 24 =
Lastly, combine like terms:
15x^2 - 49x + 24
2007-07-01 22:41:56 · answer #2 · answered by Helmut 7 · 0⤊ 0⤋
(5x)(3x) + (5x)(-8) + (-3)(3x) + (-3)(-8)
You just have to multiply the first term in the first parenthesis with the other two terms in the second parenthesis. Then you multiply the second term in the first parenthesis with the other two terms in the second parenthesis.
After doing that, you add all the resulting terms and you got your answer
2007-07-01 22:31:44 · answer #3 · answered by Anonymous · 0⤊ 0⤋
multiply 5x by (3x - 8) and -3 by (3x - 8). remember that a negative value multiplied by a negative value makes a positive value.
2007-07-01 22:29:51 · answer #4 · answered by kamisen05 1 · 0⤊ 0⤋
(5x-3)(3x-9)
= 15x^2 - 45 x - 9x + 27
= 15x^2 - 54 x + 27
2007-07-01 22:30:35 · answer #5 · answered by CPUcate 6 · 0⤊ 0⤋
Try the method that is shown in the link below
2007-07-01 22:29:10 · answer #6 · answered by Sam 3 · 0⤊ 0⤋
Cheating on your homework eh? Nice try.
2007-07-01 22:32:19 · answer #7 · answered by wiiρlυѕ 6 · 0⤊ 0⤋
15x^2-40x-9x+24
15x^2-49x+24
2007-07-01 22:33:20 · answer #8 · answered by Hercules 1 · 0⤊ 0⤋