Question

If 2 is a zero of the polynomial px = 2x² - 3x + 7a find the value of a​

Answer 1

`x = 2 \\ f(2) = > 2( {2})^(2) - 3(2) + 7a = 0 \\ 2 + 7a = 0 \\ 7a = - 2 \\ a = - (2)/(7)`

Answer 2

If 2=0 than x=2

p(x)=2x² - 3x + 7a

p(2)=0

2*2²-3*2+7a=0.

8-6+7a=0

a=
`(-2)/(7)`