Question

Simplify.
(1) (-2° -- 2y2)2 + 4x²y²
(2) (2x - 5) - (x - 3)
(3) (x + y - z) x (x + y + z) + z²​

Answer 1

Answer:

1.(-2-2y)2+4x²y²

=-4-4y+4x²y²

=x²y²-y-1

2. (2x-5)- (x-3)

=2x-5-x+3

=x-2

3.(x+y-z) x (x+y+x)+z²

=x²+xy+x²+xy+y²+xy-xz-yz-xz+z²

2x²+3xy+y²+z²-z(x+y)

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