Tìm x biết
a) 7 - \(\sqrt{x}\) = 0 d) 4x2 -1 =0
b)5\(\sqrt{x}\) + 1 = 40 e) \(\sqrt{x+1}\) - 2 = 0
c)\(\dfrac{5}{12}\)\(\sqrt{x}\) - \(\dfrac{1}{6}\) = \(\dfrac{1}{3}\) f) 2x2 + 0,82 = 1
g) ( 2\(\dfrac{1}{3}\) + 3\(\dfrac{1}{2}\)) : ( x + 3\(\dfrac{1}{7}\)) + 7\(\dfrac{1}{2}\)
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