Tìm x, biết: a) \(3x(12x-4)-9x(4x-3)=30\) ; b) \((12x-5)(4x-1)+(3x-7)(1-16x)=81\)
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Bài 5. Tìm x, biết:
a) \(3x(12x-4)-9x(4x-3)=30\)
b) \((12x-5)(4x-1)+(3x-7)(1-16x)=81\)
c) \(5(2x-1)-4(8-3x)=7\)
d) \(3x^2-6x=0\)
e) \((x-1)^2=(2x+14)^2\)
f) \((5-2x)^3-27=0\)
