Question

3x(x-4)=x-2? ajuda pfv

Answer 1

Resposta:

3x.(x-4) = x-2

3x²-12x = x-2

3x²-12x-x+2 = 0

3x²-13x+2=0

∆ = b²-4.a.c

= (-13)² - 4.3.2

= 169 - 24

∆ = 145

√∆ = 12,04

x' = (13 + 12,04)/6

x' = 4,17

x" = (13 -12,04)/6

x" = 0,16