Question

PORFAA ES DE MATES ECUACIONES DE SEGUNDO GRADO:

7x2+5=6-9x2
5+3x2=5-2x2
2x2+12x=-4x2
2x2-1/3x=1/3x

Answer 1

Respuesta:

1)

$7x2 + 5 = 6 - 9x2$

$14x + 5 = 6 - 18x$

$14x + 18x = 6 - 5$

$32x = 1$

$x = \frac{1}{32}$

2)

$5 + 3x2 = 5 - 2x2$

$6x = - 4x$

$6x + 4x = 0$

$10x = 0$

$x = 0$

3)

$2x2 + 12x = - 4x2$

$4x + 12x = - 8x$

$16x = - 8x$

$16x + 8x = 0$

$24x = 0$

$x = 0$

4)

$2x2 - \frac{1}{3} x = \frac{1}{3} x$

$12x - x = x$

$11x = x$

$11x - x = 0$

$10x = 0$

$x = 0$