Question

Determine as raizes da equação usando a formula de bhaskara x^2+8x+16=0​

Answer 1

Resposta:

$x^2+8x+16=0\\\\x_{1,\:2}=\frac{-8\pm \sqrt{8^2-4\cdot \:1\cdot \:16}}{2\cdot \:1}\\\\x_{1,\:2}=\frac{-8\pm \sqrt{0}}{2\cdot \:1}\\\\x=\frac{-8}{2\cdot \:1}\\\\x=-4$