Question

Dada a equação x2+3x-10=0, determine suas raizes.

Answer 1

Olá.

• $x^{2} + 3x - 10 = 0$

A = 1
B = 3
C = -10

$\triangle = 9 - 4(1)(-10)$
$\triangle = 9 + 40$
$\triangle = 49$

$x = \frac{-b \pm \sqrt{\triangle}}{2a}$

$x_{1} = \frac{-3 + 7}{2} = 2$
$x_{2} = \frac{-3 - 7}{2} = -5$

$\framebox{x_{1} = 2 x_{2} = -5}$

Bons estudos.