9x^2-5x^2=28

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Solution for 9x^2-5x^2=28 equation: 


Simplifying
9x2 + -5x2 = 28

Combine like terms: 9x2 + -5x2 = 4x2
4x2 = 28

Solving
4x2 = 28

Solving for variable 'x'.

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

Divide each side by '4'.
x2 = 7

Simplifying
x2 = 7

Take the square root of each side:
x = {-2.645751311, 2.645751311}

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