Question

2(x+3)=18

5(x+3)=2(x-5)

Answer 1

a)2(x+3)²-5(x+3)+2=0

b) (x-1).(x+3)=5

c) (3x+1)²+(x-2)²=25

d) x²-3√3+6=0

e) x+1 sobre x=3

Answer 2

OI

2(x + 3) = 18

2x + 6 = 18

2x = 18 - 6

2x = 12

x =12/2

x = 6

b) 5(x + 3) = 2(x - 5)

5x + 15 = 2x - 10

5x - 2x = - 10 - 15

3x = - 25

x = - 25/3

Resposta: x = - 25/3

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