Question

Evaluate 2a^2 – 3ab + b^2 – 4a + b when a = - 4 and b = – 2.

-6
74
18
26
Please no links

Answer 1

26

Explanation:

Substitute -4 for a and -2 for b

`2a^(2) - 3ab+b^(2)-4a-b\\ 2(-4^(2) )- 3 (-4*-2)+-(2^(2))-4(-4)-2 \\32-24+4+16-2`