Question

if 2 is zero of polynomial p(x)=2xsquare-3x+7a,find the value of a

Answer 1

then x=2 substitute in eqation

Answer 2

Given:

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

Zero of polynomial = 2

To Find:

The value of "a" = ?

Solution:

On putting "x = 2" in the above given expression, we get

⇒  $2(2)^2-3\times 2+7a=0$

⇒  $2\times 4-6+7a=0$

⇒  $8-6+7a=0$

⇒  $2+7a=0$

⇒  $7a=-2$

⇒  $a=-\frac{2}{7}$

So that the value of "a" will be "-2/7".