factories 36a²+36a+9
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36a2+36a+9
36a2+(18+18)a+9
36a2+18a+18a+9
18a(2a+1)+9(2a+1)
(2a+1)(18a+1)
the factors of 36a2+36a+9 is
(2a+1)(18a+1)
christina58:
it's wrong
I think it's right
no...
then, what is the correct answer....
9(2a+1)²
yah! you are right and I was also right
because we can solve it in another way
3a2+3a+9 = 9(4a2+(2+2)+1 = 9(4a2+2a+2a+1) = 9(2a(2a+1)+1(2a+1)) = 9((2a+1)(2a+1)) = 9(2a+1)2
thanks
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