2*X*X+4*X*X=42

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Solution for 2*X*X+4*X*X=42 equation: 


Simplifying
2X * X + 4X * X = 42

Multiply X * X
2X2 + 4X * X = 42

Multiply X * X
2X2 + 4X2 = 42

Combine like terms: 2X2 + 4X2 = 6X2
6X2 = 42

Solving
6X2 = 42

Solving for variable 'X'.

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

Divide each side by '6'.
X2 = 7

Simplifying
X2 = 7

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

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