Question

x( -3x + 7 ) -2 = 0 qual a resposta?​

Answer 1

Resposta:

x'=1/3 x''=2

Explicação passo-a-passo:

x(-3x+7)-2=0

-3x²+7x-2=0(-1)

3x-7x+2=0

∆= 25

x=-(-7)±5/6

x'=7+5/6 =2

x''=7-5/6=1/3