Question

+b+ √b^2-4AC para a= 1, b=2 e c=-8

Answer 1

$b + \sqrt{b}^2 - 4 ac = 2 + \sqrt{2}^2 - 4 * 1 * (-8) = 2 + 2 - 4 * (-8) = 4 + 32 = 36$

Answer 2

+2+2-(8.(4.-8))
+4 - (8.-32)
+4 - 256
-252