Question

a) (2x + 1)2 = (x + 3)2
b) (x + 3)2 = 5(2 - x)
c) (x - 2)2 + 3 = 5x + 7
d) (x + 1)2 + (x - 2)2 = 0

Answer 1

a) 4x+2 = 2x + 6

2x = 6-2

x = 4/2

x= 2

b)

2x + 6 = 10 - 5x

2x + 5x = 10 - 6

7x = 4

x = 4/7

c)

2x -4 + 3 = 5x + 7

5x - 2x -4 +3 = 7

5x -2x -1 = 7

3x = 8

x = 8/3

d)

2x + 2 + 2x -4 = 0

4x -2 = 0

4x = 2

x = 2/4

Bons estudos.