Question

find the value of a if X + 2 is a factor of 4 x^ 4 + 2 x^ 3 - 3 x ^2 + 8 x + 5 a​

Answer 1

Step-by-step explanation:

x +2 = 0

x = -2

4 x^ 4 + 2 x^ 3 - 3 x ^2 + 8 x + 5 a = 0

4 × 16 + 2×(-8) -3(4) + 8(-2) +5a = 0

64 - 16 - 16 + 5a = 0

48 +5a = 0

a = -48/5