Question

B+)= 2)0,5a(2a-b)-0,5b(2b-a) = 3)-3а^2(-а+9а^2-2)= 4)10х(у-0,2х)-10у(х-0,2у)= решите : 3

Answer 1

1)=14b^5+2b⁴-4b³; 2)=a²-0,5ab-b²+0,5ab=a²-b²=(a+b)(a-b); 3)=3a³-27a⁴+6a²; 4)=10xy+x²-10xy+y²=x²+y²=(x+y)(x+y)