help
2007-02-21 16:43:39 · 5 answers · asked by pointemotion35 1 in Education & Reference ➔ Homework Help
If you use FOIL, you get r^2 + 7r + 12, which is equivalent to what you have (it's just expanded). You could also simply switch the order of either the factors (so you have (r + 3)(r + 4)) or of the addends (like (3 + r)(4 + r)) - that's just the commutative property of addition/multiplication.
2007-02-21 16:48:27 · answer #1 · answered by igorotboy 7 · 0⤊ 0⤋
FOIL
First Outside Inside Last
r^ 4r 3r 12
=
r^ + 7r + 12
2007-02-22 00:48:19 · answer #2 · answered by eet2006 3 · 0⤊ 0⤋
to find the equivalent answer all you do is multiply the two together.
r*r=r^2
r*3=3r
r*4=4r
4*3=12
The answer is r^2+7r+12
***You have to multiply every term together to get the correct answer. The way i learned to do it is FOIL (first, outside, inside last). Simply stated, multiply the first two terms, the outside terms, the inside terms, and the last terms.***
Hope this helped!
2007-02-22 00:54:07 · answer #3 · answered by iamtiffy606 3 · 0⤊ 0⤋
r^2 + 7r + 12
r^2 is r squared
2007-02-22 00:46:48 · answer #4 · answered by johndoe39 3 · 0⤊ 0⤋
(r+4)(r+3)=r(r+3)+4(r+3)=r^2+3r+4r+12=r^2+7r+12
2007-02-22 00:46:52 · answer #5 · answered by Jason N 2 · 0⤊ 0⤋