Question

1345. 1) (-a + b) c; 2) (a -- 2) (-3); 3) (x - y) 4; 4) (1 + b) (-4).​

Answer 1

1) (-a+b)c=-ac+bc

2) (a-2)(-3)=-3a-2(-3)=-3a+6

3) (x-y)4=4x-4y

4)(1+b)(-4)=-4-4b