👤

efectuati calculele (2x²+y)(x-y²)-(2x-y²)(x²-y)

Răspuns :

(2x²+y)(-y²+x) - (-y²+2x)(x²-y)

-2x²y²+2x²x-y³+xy+y²x²-y³-2xx²+2xy

= -2x²y²+x²y²-2y³+2yx+yx.