2007-01-26 15:51:03 · 15 answers · asked by luis a 1 in Science & Mathematics ➔ Mathematics
Please be specific. I assume you need to simplify the expression, correct?
First: use the foiling method....
(3x)(3x)+ (3x)(y) + (y)(3x) + (y)(y)
Sec: combine the terms...
9x^2 + 3xy + 3xy + y^2
Third: combine "like" terms...
9x^2 + 6xy + y^2
2007-01-26 16:07:26 · answer #1 · answered by ♪♥Annie♥♪ 6 · 0⤊ 0⤋
I think there's another way, but I'd just use the FOIL method (first, outer, inner, last) to multiply it.
(3x+y)(3x+y)
9x^2+3xy +3xy+y^2 (now add like terms)
9x^2+6xy+y^2 and that's the answer ;)
2007-01-27 00:00:33 · answer #2 · answered by audreamartin 1 · 0⤊ 0⤋
(3x+y)(3x+y) = 9x^2 + 6xy + y^2 Answer
2007-01-26 23:56:51 · answer #3 · answered by Anonymous · 0⤊ 0⤋
mnemonic: FOIL. (First, Outer, Inner Last)
3x*3x= 9x^2
3x*y=3xy
3x*y=3xy
y*y=y^2
so final answer is 9x^2+6xy+y^2
2007-01-27 00:00:04 · answer #4 · answered by spacey_post 2 · 0⤊ 0⤋
(3x+y)(3x+y), first you dustribute 3x to everything in the partenthesis number 2 and that equal 9x2+3xy, and then distribute y to everything to the parenthesis nubmer 2(again) and that equal 3xy+y2, then you add like terms and your final answer is 9x2+6xy+y2
2007-01-27 00:02:21 · answer #5 · answered by Moi 2 · 0⤊ 0⤋
3x(3x+y) +y(3x+y)
=9x2 + 3xy + 3xy + y2
= 9x2 + 6xy + y2
i.e 9x squared + 6xy + y squared
2007-01-27 08:55:59 · answer #6 · answered by Nadz 1 · 0⤊ 0⤋
(a+b)²=a²+2ab+b²
so 3x²+2(3xy) +y²
=9x²+6xy+y²
2007-01-26 23:58:07 · answer #7 · answered by ally 2 · 0⤊ 0⤋
(3x+y)(3x+y)=9x^2+6xy+y^2
2007-01-27 01:01:20 · answer #8 · answered by yupchagee 7 · 0⤊ 0⤋
(3x+y)(3x+y)=9x^2+6xy+y^2
2007-01-26 23:58:20 · answer #9 · answered by Anna N 1 · 0⤊ 0⤋
9x^2+6xy+y^2
2007-01-27 09:07:20 · answer #10 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋