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AndraStancu
a fost răspuns

1). calculati:
a) 5x²-3x+2x²-x
b)(2a²)³*(3ax²)²
c)(2x+3x)(3x-2y)

2). Efectuati, respectand ordinea efectuarii operatiilor:
(x²+y+1)(3x-y)-(2x)²(x-y)+2x(3x²-2y)

REPEDEEE!!! DAU COROANA!!!

Răspuns :

Ignatovvlad201
a) 7x²-4x=x×(7x-4)
b)8a⁶×9a²x⁴=72a⁸x⁴
c)5x×(3x-2y)=15x²-10xy


2) 3x³-x²y+3xy-y²+3x-y-(2x)²×x+(2x)²×y+6x³-4xy=
3x³-x²y+3xy-y²+3x-y-4x²x+4x²y+6x³-4xy=
3x³-x²y+3xy-y²+3x-y-4x³+4x²y+6x³-4xy=
5x³+3x²y-xy-y²+3x-y


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