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posted by Astri on Thursday, November 4, 2010 at 8:43am.
If √ax²-b=c and a=2, b=7, and e=5, find X
sqrt(ax^2 - b) = c, sqrt(2x^2 - 7) = 5, Square both sides: 2x^2 - 7 = 25, 2x^2 = 25 + 7, 2x^2 = 32, x^2 = 32 /2 = 16, Take sqrt of both sides and get: x = +- 4.
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