Question

Calculati:
|4x patrat + 9x - 9|=0

Answer 1

$|4x {}^{2} + 9x - 9 | = 0$

$| 4x {}^{2} + 9x - 9 | = 0$

$| 4x {}^{2} + 12x - 3x - 9 | = 0$

$| 4x(x + 3) - 3(x + 3) | = 0$

$| (4x - 3)(x + 3) | = 0$

Asadar, unul dintre termeni trebuie sa fie 0.

I.

$4x - 3 = 0$

$4x = 3$

$x = \frac{3}{4}$

II.

$x + 3 = 0$

$x = - 3$