Question

If x=2 and x=0 are roots of the polynomial f(x)=2x3-5x2+ax+b, find the value of a and b.
Please answer

Answer 1

the values of A and b are 2 &3

Answer 2

x =0 f(x) = 2(0)3-5(0)2+a(0)+b=0
b =0
x =2 f(x) = 2(2)3-5(2)2+a(2)+0=0
16-20+2a=0
2a = 4
a = 2
so a=2, b =0
please comment if you have any doubt