(5x + 4)(9x + 9)
2007-12-30 14:42:12 · 10 answers · asked by 11:11 3 in Science & Mathematics ➔ Mathematics
Using the FOIL-ing method (multiplying first, outside, inside, last terms):
=(5x + 4)(9x + 9)
=45x² + 45x + 36x +36
=45x² + 81x + 36
2007-12-30 14:45:31 · answer #1 · answered by ¿ /\/ 馬 ? 7 · 0⤊ 0⤋
use FOIL, first, outer,inner, last. You mulltiply the first two factors, 5x times 9x, then the outer, 5x times 9, inner two, 4 times 9x the last 4 times 9.The answer is
45x squared+ 45x + 36x +36 or
45x squared+81x +36
I hope that helps
2007-12-30 14:49:15 · answer #2 · answered by jessielynn 2 · 0⤊ 0⤋
These are binomials.
FOIL it. First, outer, inner, last.
First being 5x x 9x, outer being 5x x 9, inner being 4 x 9x and last being 4 x 9.
This gives you 45x^2 (x squared), 45x, 36x, and 36.
Your overall answer will be these added together.
45x^2 + 81x + 36
2007-12-30 14:46:42 · answer #3 · answered by whoop! 4 · 1⤊ 0⤋
umm..that is already factored..you want to solve it..i think..
to do that just double distribute:
(5x + 4)(9x + 9)
45x²+45x+36x+36
45x²+81x+36
hope this helped [=
2007-12-30 14:46:05 · answer #4 · answered by Mariee 4 · 0⤊ 0⤋
well you can only simplify the 9x+9 which gives u 9(x+1)
which then gives u 9(5x+4)(x+1) hey buddy can you check my answers if im doing it right i know i am because this is all 2 years ago thanks :-)
2007-12-30 14:47:20 · answer #5 · answered by Anonymous · 0⤊ 0⤋
45x^2 + 81x + 36
Ok, yes, I am a geek. I love Math. But hey, if you have a mind for math, go into Engineering...you will make great money, have job security, and be able to work anywhere in the world.
: )
2007-12-30 14:46:44 · answer #6 · answered by Muted Prophet 3 · 0⤊ 0⤋
45x^2 + 45x +36x + 36 =
45x^2 + 81x + 36
2007-12-30 16:33:19 · answer #7 · answered by macks 3 · 0⤊ 0⤋
45x^2 + 81x + 36
2007-12-30 14:45:49 · answer #8 · answered by coldinthecountry 2 · 0⤊ 0⤋
45x² + 81x + 36
2007-12-30 15:18:39 · answer #9 · answered by vicky 2 · 0⤊ 0⤋
9(x+1)(5x+4)
2007-12-30 14:46:17 · answer #10 · answered by Anonymous · 1⤊ 0⤋