(1)ax+2010a=2009x
(2009-a)x=2010
x=2010/(2009-a)
(2)b²x²+b^4x²=b^2+b^4
(b^2+b^4)x^2=b^2+b^4
x^2=1
x=1或x=-1
(3)(c^2+5+2d^2)x=1
x=1/(c^2+5+2d^2)
(4)(m+m)x^2=9-1
x^2=4/m
x=2/√m或x=-2/√m
(5)(2a-1)x=2ax-a
(2a-2a-1)x=-a
x=a
(6)(1/n^2+n^2)x^2=4
[(1+n^4)/n^2]x^2=4
x^2=4n^2/(1+n^4)
x=2|n|/√(1+n^4)或x=-2|n|/√(1+n^4)
(7)1/4 k^2x^2=p^2
x^2=4p^2/k^2
x=2|p/k|或x=-2|p/k|
(8)1=hx^2
x^2=1/h
x=1/√h或x=-1/√h
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