Question

упростите выражения а(в-3)+(3-в)-в(3-в)

Answer 1

a(b-3)+(3-b)-b(3-b)=(b-3)*(a-1+b)=ab-b+b²-3a+3-3b=ab-4b+b²-3a+3

5(a-b)²-(a+b)(b-a)=5a²-10ab+5b²-b²+a²=6a²-10ab+4b²

a(a-b)²-(b-a)³=a³-2a²b+ab²-b³+3ab²-3a²b+a³=2a³-5a²b+4ab²-b³