Question

Calcule a equação polinomial de 2º grau: ax²+ c = 0

b) 5z2-500=0

Answer 1

Resposta:

$5z^2-500=0\\\\5z^2-500+500=0+500\\\\5z^2=500\\\\\frac{5z^2}{5}=\frac{500}{5}\\\\z^2=100\\\\z=\sqrt{100},\:z=-\sqrt{100}\\\\z=10,\:z=-10$