8x^2=9-x^2

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Solution for 8x^2=9-x^2 equation: 


Simplifying
8x2 = 9 + -1x2

Solving
8x2 = 9 + -1x2

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add 'x2' to each side of the equation.
8x2 + x2 = 9 + -1x2 + x2

Combine like terms: 8x2 + x2 = 9x2
9x2 = 9 + -1x2 + x2

Combine like terms: -1x2 + x2 = 0
9x2 = 9 + 0
9x2 = 9

Divide each side by '9'.
x2 = 1

Simplifying
x2 = 1

Take the square root of each side:
x = {-1, 1}

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