Question

Evaluate 2b2 − 4a + 4a2 for a = 3 and b = −8.

Answer 1

152

Explanation:

a = 3; b = -8

2b² − 4a + 4a² =

= 2(-8)² - 4(3) + 4(3)²

= 2(64) - 12 + 4(9)

= 128 - 12 + 36

= 116 + 36

= 152