Question

5. If 2 is a zero of the polynomial p(x)=2x² – 3x + 7a, find the value of a.​

Answer 1

Answer:

a = -2/7

Step-by-step explanation:

p(x) = 2x^2 - 3x + 7a

p(2) = 2(2)^2 - 3(2) + 7a

p(2) = 8 - 6 + 7a  

       = 2 + 7a

  - 7a = 2                  ( by shifting +7a to the LHS we get - 7a )

       a = 2/-7

        or

       a = -2/7

Answer 2

p(2)=2(2)sq-3(2)+7a=0

2x4-3(2)+7a=0

8-6+7a=0

2+7a=0

7a=-2

a=-2/7