Question

A fórmula de baskra 4X+12x+5=0

Answer 1

Resposta:

$4x^2+12x+5=0\\\\x_{1,\:2}=\frac{-12\pm \sqrt{12^2-4\cdot \:4\cdot \:5}}{2\cdot \:4}$

$x=-\frac{1}{2},\:x=-\frac{5}{2}\quad \left(\mathrm{Decimal}:\quad x=-0.5,\:x=-2.5\right)$