1.

Simplify:x2(x - y) y2(x + 2y)

Answer»

x2y2 (x – y) (x + 2y)

= x2y2 (x2 + 2xy – xy – 2y2)

= x2y2 (x2 + xy – 2y2)

= x4y2 + x3y3 – 2x2y4



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