Question

3x2 - X - 4 find zero​

Answer 1

$= > {3x}^{2} - x - 4 = 0$

$= > {3x}^{2} + 3x - 4x - 4 = 0$

$= > 3x(x + 1) - 4(x + 1) = 0$

$= > (3x - 4)(x + 1) = 0$

$= > x = \frac{4}{3} or \: x = - 1$