X*X+X*X=9

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Solution for X*X+X*X=9 equation: 


Simplifying
X * X + X * X = 9

Multiply X * X
X2 + X * X = 9

Multiply X * X
X2 + X2 = 9

Combine like terms: X2 + X2 = 2X2
2X2 = 9

Solving
2X2 = 9

Solving for variable 'X'.

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

Divide each side by '2'.
X2 = 4.5

Simplifying
X2 = 4.5

Take the square root of each side:
X = {-2.121320344, 2.121320344}

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