Posted by Astri on .
If √ax²b=c and a=2, b=7, and e=5, find X

Math 
Henry,
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.