solve for x: .140=x^2/(1.35-x)

I can't figure out how to solve for x.
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1 Answer

0.140=x2/(1.35-x),

0.140(1.35-x)=x2,

0.189-0.140x=x2,

x2+0.140x=0.189 is a quadratic equation. Complete the square:

x+0.140x+0.0049=0.189+0.0049=0.1939

(x+0.7)2=0.1939,

x+0.07=±√0.1939=±0.44034 approx.

x=0.37034 or -0.51034.

by Top Rated User (1.2m points)

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