Evaluate 4 (a^2 + 2b) - 2b when a = 2 and b = - 2.

Question

Mathematics

Asia Reyes

12 August, 03:39

Evaluate 4 (a^2 + 2b) - 2b when a = 2 and b = - 2.

+4

Answers (2)

Know the Answer?

Heath Alexander · Answer 1

4

Step-by-step explanation:

4 (2^2 + (2 * - 2)) - (2 * - 2)

2^2 = 4

4 (4 + (2 * - 2)) - (2 * - 2)

2 * - 2 = - 4

4 (4 + - 4) - - 4

- - 4 = + 4

+-4 = - 4

4 (4 - 4) + 4

4 - 4 = 0

4 (0) + 4

4 * 0 = 0

0 + 4

0 + 4 = 4

4

Emmy Morton · Answer 2

4

Step-by-step explanation:

4 (4-4) + 4=4

insert 2 in a and-2 in b