Question

Evaluate 4x3 + 2x2 – 8x + 7 for x = 1/2(√3+2)​

Answer 1

Answer:

4×3+2×2-8x+7 for x=1/2(√3+2)

12+4-8x+7

23-8x,

x=1/2(√3+2)

23-8×1/2(√3+2)

23-4(√3+2)

23-4√3-8

15-4√3 answer