Question

find the value of a if x + 2is factor of 4x⁴ + 2x³- 3x² + 8x + 5a
8th class questions​

Answer 1

Answer:

a=64-16-12-16+5a

a=4

Answer 2

Answer:

x+2=0

x=-2

f(x)=4x⁴+2x³-3x²+8x+5a

f(-2)=4(-2)⁴+2(-2)³-3(-2)²+8(-2)+5a

f(-2)=64-16-12-16+5a

f(-2)=20+5a