Question

If 2 is a zero of polynomial p(x) = 4x2 + 2x - 5a then find
the value of a?​

Answer 1

Given that 2 is a zero of p(x)

So, p(2) = 0

Put 2 at the place of x in the given polynomial.

4(2)^2 + 2(2) - 5a = 0

4×4 + 4 - 5a = 0

16 + 4 - 5a = 0

20 5a = 0

-5a = -20

a = -20/-5

a = 4

Answer 2

Answer:

2

Step-by-step explanation:

p(a) =2

p(2) =4(2)+2x-5(2)        ∴ x=2,substituting a in 5-a

p(2) =8+2x-10

       -2+2x

          x=-2+2

          x=0