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Danisumore
5

1)3x + 6 - 5 = 2x + 2

3x - 2x = 2 - 6 + 5

x = 1

2)6x + 18 - 9x + 3 = 12x + 6

6x - 9x - 12x = 6 - 18 - 3 - 15x = - 15

x = - 15 / - 15 = 13)4x2 - 64 = 0

4x2 = 64

x2 = 64 / 4 = 164)5x2 - 125x = 0

x(5x - 125) = 0

x = 0 5x - 125 = 5

5x = 125

x = 125 / 5 = 255)x2 - 4 + 5x = 5x + 5

x2 - 4 + 5x - 5x - 5 = 0

x2 - 9 = 0 (Incompleta de tipo I)

x2 = 9

x = ±3.