Question

If x is -4 and y is 5 then how do I solve x2+2xy+y2

Answer 1

What you want to do is substitute -4 for x and 5 for y

(-4)^2 + 2(-4)(5) + (5)^2

Are you with me so far?

Answer 2

Yes

Answer 3

Then you can simplify

16 + -20 + 25 =

16 + 5

=21

Answer 4

Ok I see now Ty

Answer 5

@KirbyLegs
Question: What's wrong with my logic?? Please, state out
x^2 + 2xy +y^2 = (x+y)^2
replace x = -4, y =5
(-4+5)^2 = 1