Factoring polynomials
Not sure if I got this one right. I'm having alot of difficulty with these things. Factor the following polynomials:
4y^2+16y+16
And the other is:
x^2-25/x+5 (It reads x squared -25 over x+5)
Thank you
2006-09-12 23:58:54 · 7 answers · asked by QDPie 2 in Education & Reference ➔ Homework Help
1. 4y^2+ 16y +16 this is a complete square of ( 2y + 4) ^ 2. =
(2y + 4) . (2y + 4 )
( a + b ) ^2 = a^2 +2ab + b^2.
2. X^2 -25 / x+5
(x+5) ( x-5) /x+5
= x-5.
2006-09-13 07:01:45 · answer #1 · answered by macline k 2 · 0⤊ 0⤋
I dont know how to do the second one.... r u sure u copied the problem correctly??.... but still i can help u wid the 1st one
4y^2 +16y+16
4y^2+ 8y+8y +16
4y(y +2) + 8(y+2)
(4y+8)(y+2)
2006-09-13 07:28:29 · answer #2 · answered by mj 2 · 0⤊ 0⤋
4y^2+16y+16
=4y^2+8y+8y+16 [4*16=64, 8*8 also 64 and 8+8 =16]
=4y(y+2)+8(y+2) [taking common]
=(y+2)+(4y+8) [taking common]
2006-09-13 07:21:25 · answer #3 · answered by Gaurab N 3 · 0⤊ 1⤋
can't really explain to you how to derive e answer but the first answer shld be
(2y+4)^2
and the second ans is
(x-5)
You can actually get the ans thru the using the method for algebraic division.
Good luck.
I hated Math and only knew how to do the division when I was in college.
It becomes easier when you get the hang of it.
2006-09-13 07:08:05 · answer #4 · answered by nadia z 2 · 0⤊ 0⤋
Let's see what results you have so far then I can tell you what you are doing wrong.
2006-09-13 07:08:40 · answer #5 · answered by Kainoa 5 · 0⤊ 0⤋
Ask your teacher
2006-09-13 06:59:49 · answer #6 · answered by Anonymous · 0⤊ 0⤋
wow, i havent done algebra for way too long
2006-09-13 07:00:37 · answer #7 · answered by Southie9 5 · 0⤊ 1⤋