Question

Evaluate 2b2 - 3b + 4a2 for a= -6 & b=8 A. -40 B. 202 C. 248 D. 346

Answer 1

2b² - 3b + 4a² =
2*(8)² - 3*8 + 4*(-6)² = 
2 * 64 - 24 + 4*36 = 
128 - 24 + 144 = 248

Answer 2

2b^2 - 3b + 4a^2....a = -6, b = 8

2(8^2) - 3(8) + 4(-6^2) =
2(64) - 24 + 4(36) =
128 - 24 + 144 =
248 <==