write an expression for the perimeter in simplest form. it is a rectangle
(3x-2)(3x-2)+(5x+7)(5x+7)
my answer is 16x+10 is that right

Question

radar · Answer

I think you're right, but you have them expressed as  a combination of multiplication and addition.
I assume ones side is 3x-2, and the other dimension is 5x+7.  The perimeter would be expressed as P=2(3x-2) + 2(5x+7) P=6x-4 + 10x+14)=16x +10

radar · Answer

If  I followed the way you expressed it, it would be$$(9x ^{2}-12x+4)+(25x ^{2}+70x +49)$$ A totally different looking animal.

radar · Answer

Do you see the difference?