4x^2-91=81+225.75

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Solution for 4x^2-91=81+225.75 equation:


Simplifying
4x2 + -91 = 81 + 225.75

Reorder the terms:
-91 + 4x2 = 81 + 225.75

Combine like terms: 81 + 225.75 = 306.75
-91 + 4x2 = 306.75

Solving
-91 + 4x2 = 306.75

Solving for variable 'x'.

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

Add '91' to each side of the equation.
-91 + 91 + 4x2 = 306.75 + 91

Combine like terms: -91 + 91 = 0
0 + 4x2 = 306.75 + 91
4x2 = 306.75 + 91

Combine like terms: 306.75 + 91 = 397.75
4x2 = 397.75

Divide each side by '4'.
x2 = 99.4375

Simplifying
x2 = 99.4375

Take the square root of each side:
x = {-9.971835338, 9.971835338}

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