Question

the square of
-8xy - 7xy​

Answer 1

Answer:

225x^2y^2

Step-by-step explanation:

225x^2y^2

This is it

Answer 2

-8xy-7xy

= -(8xy+7xy)

The square of this

=(8xy+7xy)^2 ×(-1)^2

As we know the identity

(a+b)^2=a^2+b^2+2ab

so ,

(8xy+7xy)^2

=(8xy)^2 + (7xy)^2 +2×8xy×7xy

=64x^2y^2 + 49x^2y^2+112x^2y^2

=(64+49+112)x^2y^2

=225x^2y^2