Question

Answer Me please of this question​

Answer 1

Answer:

By remainder theorem,

x² - 3x - 4 = 0

(x - 4) (x + 1) = 0 → x = 4 (or) -1

2(4)³ + (4)² + 4a + b = 0

4a + b = -144 ---- eq(1)

2(-1)³ + (-1)² - a + b = 0

a - b = -1 ---- eq(2)

Eq(1) + (2) → 5a = -145 ; a = -29

b = -28

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