4x^2+9x^2=256

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Solution for 4x^2+9x^2=256 equation: 


Simplifying
4x2 + 9x2 = 256

Combine like terms: 4x2 + 9x2 = 13x2
13x2 = 256

Solving
13x2 = 256

Solving for variable 'x'.

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

Divide each side by '13'.
x2 = 19.69230769

Simplifying
x2 = 19.69230769

Take the square root of each side:
x = {-4.43760157, 4.43760157}

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