Question

DÊ os coeficientes de cada equação do 2* grau

3x² - x + 20 = 0 a= b= c=

Answer 1

Resposta:

$3x^2-x+20=0\\\\x_{1,\:2}=\frac{-\left(-1\right)\pm \sqrt{\left(-1\right)^2-4\cdot \:3\cdot \:20}}{2\cdot \:3}\\\\x_1=\frac{-\left(-1\right)+\sqrt{239}i}{2\cdot \:3},\:x_2=\frac{-\left(-1\right)-\sqrt{239}i}{2\cdot \:3}\\\\x=\frac{1}{6}+i\frac{\sqrt{239}}{6}\\\\\:x=\frac{1}{6}-i\frac{\sqrt{239}}{6}$