# Math

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If √ax²-b=c and a=2, b=7, and e=5, find X

• Math -

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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