Question

calcule o valor de x.
a) 4(x+1)-2=2x+4
b) 3(x-1)=8x
c) (x+1)²=x+1
d (x+1).(x.2)=3+x

todas com resolução pfv

Answer 1

calcule o valor de x.

a) 4(x+1)-2=2x+4

4x + 4 - 2 = 2x + 4

2x = 4 - 2 = 2

x = 1

b) 3(x-1)=8x

3x - 3 = 8x

8x - 3x = -3

5x = -3

x = -3/5

c) (x+1)²=x+1

x² + 2x + 1 = x + 1

x² + x = 0

x*(x + 1)  = 0

x1 = 0

x2 = -1

d (x + 1)(x.2) incompleta