Question

Find the value of 3x^2-x-4​

Answer 1

${\tt{\pink{\underline{\underline{\huge{Answer:}}}}}}$

$\implies\sf {3x}^{2} - x - 4 = 0$

$\implies\sf {3x}^{2} - 4x + 3x - 4 = 0$

$\implies\sf \: x(3x - 4) + 1(3x - 4) = 0$

$\implies\sf(x + 1) = 0 \: \: or \: \: (3x - 4) = 0$

$\implies\sf \: x = - 1 \: \: or \: \: 3x = 4$

$\implies\sf \: x = - 1 \: \: or \: \: x = \dfrac{3}{4}$

______________________________