Question

Find if the x = -1 is the zeroes of the polynomial f(x) = 2x 2 – 3x – 2.

Answer 1

x = - 1

f ( - 1 ) = 2 x ( -1 )² - 3 x -1 - 2

= 2 + 3 - 2

+2 & - 2 gets cancelled

Answer ➡ 3

Answer 2

${\huge{\sf{\underline{\underline{solution}}}}}$

given, x = - 1

put the value of x in the given equation, $f(x) =2x{^2}-3x-2$

$f(-1) =2(-1) {^2}-3(-1) -2$

$f(x) =2 + 3-2$

$f(x) =3$