Question

-4 + 5ab = ? if a = 1, b = -2​

Answer 1

Answer:

$- 4 + 5ab \\ = - 4 + 5 \times 1 \times - 2 \\ = - 4 - 10 \\ = -14$

Answer 2

Answer:

- 10

Step-by-step explanation:

==> - 4 + 5 (1) (-2)

==> -4 -10

==> - 10