Question

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Answer 1

Resposta:

2x+2/6x= 2x+4/2x+12

(2x+2).(2x+12)=6x.(2x+4)

4x²+24x+4x+24=12x²+24x

4x²-12x²+24x+4x-24x+24=0

-8x²+4x+24=0

2x²-x-6=0

∆=b²-4a.c

∆=(-1)²-4(2).(-6)

∆=1+48

∆=49

∆=√49

∆=7

x= -b+-√48/2.a

x=1+-7/2.2

x'=1+7/4= 8/4=2

x''= 1-7/4=-6/4:2=-3/2