А)35-5m-m^3+7m^3 б) 2-y+6x-3xy в)8ab^2+a-2b-4a^2b г)ab^2-6a+b^3-6b-7b^2+42

Question

А)35-5m-m^3+7m^3 б) 2-y+6x-3xy в)8ab^2+a-2b-4a^2b г)ab^2-6a+b^3-6b-7b^2+42

Answer 1

A) 35-5m-m^3+7m^3=35-5m+6m^3
b) 2-y+6x-3xy= 2-y+3x(2-y)=(2-y)(1+3x)
c) 8ab^2+a-2b-4a^2b=4ab(2b-a)-(2b-a)=(2b-a)(4ab-1)
d) ab^2-6a+b^3-6b-7b^2+42= b^2(a+b)-6(a+b)-7(b^2-6)=(a+b)(b^2-6)-7(b^2-6)=(b^2-6)(a+b-7)