Question

Find the value of a and b so that x+1 and x-1 are factors of f(x)=x⁴-ax³+2x²-3x+b

Answer 1

Answer:

let try

Step-by-step explanation:

Hence the zeroes are-1and+1

p(-1)=(-1)^4-a(-1)^3+2(-1)^2-3(-1)+b

=1+a+2+3+b

i.e a+b=-6

p(1)=(1)^4-a(1)^3+2(1)^2-3(1)+b

=1-a+2-3+b

=-a+b+0

i.e-a+b=0

by solving we get a=3andb=-3