1 Resolva:

a) x^2 -10 = 6

b) x^2 + 10 = 6

c) 2x^2 + 4x -16 = 0

d) 2x - 3y = 8
x + 2y = 5


2 Resolva:

a) √2x - 10 - 5 =0

b)
√x^2 -20 = 4
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