Question

2x²-2x-12=0 qual a solução

Answer 1

4x-2x=12
2x=12
12/2
x=6
bjjs

Answer 2

2x²-2x-12=0 ÷2  

x²-x-6=0

Δ= (-1)² -4.1.-6

Δ=1+24=25

x= - (-1)+-√25/2.1

x=1+-5/2

x1=1+5/2
x1=6/2
x1=3

x2= 1-5/2

x2=-4/2

x2=-2

S[3,-2]