Question

x²-x-4=0 ???? preciso do delta e do bhaskara

Answer 1

x²-x-4=0
a= 1 b= -1 c= -4
Δ=b² - 4.a.c
Δ=(-1)² -4. 1. (-4)
Δ=1+16
Δ=17

Answer 2

Δ= 17
X1 = -2,56
X2 = -1,56