Tìm x biết:
a) \( \sqrt{9x} = 15 \)
b) \( \sqrt{ 4x^2} = 8 \)
c) \( \sqrt{ 4(x+1)} = \sqrt{8} \)
d) \( \sqrt{9(2-3x)^2 } = 6 \)
e) \( \sqrt{x^2 -4} - \sqrt{x-2} = 0 \)
Tìm x biết:
a) \( \sqrt{9x} = 15 \)
b) \( \sqrt{ 4x^2} = 8 \)
c) \( \sqrt{ 4(x+1)} = \sqrt{8} \)
d) \( \sqrt{9(2-3x)^2 } = 6 \)
e) \( \sqrt{x^2 -4} - \sqrt{x-2} = 0 \)