Question

find the value of both a and b if both (x+2) and (x-2) are factors of a​

Answer 1

Step-by-step explanation:

ax

3

+x

2

+2a+b=0

The factor of equation is x+1 ,x

Then put x=-1 or x=0in this equation

a(−1)

3

+(−1)

2

+2a+b=0

Or -a+1+2a+b=0

Or a+b=-1.............(1)

a(0)

3

+(0)

2

+2a+b=0

Or 2a+b=0.............(2)

Sub 1 &2

Then a=1 or a=1

Put value of a =1 in equ 1

Then b=2