9x^2-7=71

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Solution for 9x^2-7=71 equation:


Simplifying
9x2 + -7 = 71

Reorder the terms:
-7 + 9x2 = 71

Solving
-7 + 9x2 = 71

Solving for variable 'x'.

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

Add '7' to each side of the equation.
-7 + 7 + 9x2 = 71 + 7

Combine like terms: -7 + 7 = 0
0 + 9x2 = 71 + 7
9x2 = 71 + 7

Combine like terms: 71 + 7 = 78
9x2 = 78

Divide each side by '9'.
x2 = 8.666666667

Simplifying
x2 = 8.666666667

Take the square root of each side:
x = {-2.943920289, 2.943920289}

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