Question

Is x=-4 a solution of the equation 2x^2+5x-12=0

Answer 1

Answer,

Hope I help you

Answer 2

$\textbf{Given:}$

$2x^2+5x-12=0$

$\textbf{To verify:}$

$\text{x=-4 is a solution of 2x^2+5x-12=0 }$

$\textbf{Solution:}$

$\text{Consider,}$

$2x^2+5x-12=0$

$\text{Put x=-4,}$

$2(-4)^2+5(-4)-12=0$

$2(16)-20-12=0$

$32-20-12=0$

$0=0$

$\therefore\textbf{x=-4 satisfies the equation \bf\,2x^2+5x-12=0 }$

$\textbf{Hence x=-4 is a solution of \bf\,2x^2+5x-12=0 }$