Question

(iv) x2 + 2xy + y2 and - x2 - 2 xy + y2
(v) 12 - m2 - n?, - m2 + 12 + n2 and -12- 2 m2​

Answer 1

1. x2 + 2xy + y2 = -x2 - 2xy + y2

x2 + x2 + 2xy + 2xy + y2 - y2

then

2xsquare + 4xy This is the answer of First