Question

-4(a-b)+2(3a-b) при а- -1,5;b- -1

Answer 1

-4(a-b)+2(3a-b) при а- -1,5;b- -1 = -4а+4b+6a-2b = 6-4-9+2 = -5

Answer 2

-4 (-1,5-(-1))+2(3·(-1,5)-(-1));

-4(-1,5+1)+2(-4,5+1);

-4·(0,5)+2·(-3,5);

2-7= -5;