Question

Qual o delta de X/2-X+7=5

Answer 1

x ^2 - x + 7 = 5
x^2 - x + 2 = 0

a = 1
b = -1 
c = 2

delta = b ^2 - 4.a.c
delta = (-1) ^2 - 4.1.2
delta = 1 - 8 
delta = -7