Question

Como???Resolva as equacoes do segundo grau completa e calcule as raizes reais.  6x²+3x=1+2x

Answer 1

6x²+3x-2x=1

6x²+x-1=0  

1+24  

Δ=25 

-1+-√25/2.6

-1+-5/12

X'=4/12   X'=1/3

X''=   -6/12  X''=  -1/2

Answer 2

6x² + 3x = 1 + 2x
6x² + 3x - 2x - 1 = 0

6x² + x - 1 = 0

Δ = b² - 4ac
Δ = 1² - 4 . 6 . -1
Δ = 1 + 24
Δ = 25

x = - b +- √Δ/2a
x = - 1 + -√25/2.6
x = -1 +-5/12
x' = - 1 + 5/12
x' = 4/12 = 1/3
x" = - 1-5/12
x" = -6/12 = -1/2    ok