2x^2-11=87

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Solution for 2x^2-11=87 equation: 


Simplifying
2x2 + -11 = 87

Reorder the terms:
-11 + 2x2 = 87

Solving
-11 + 2x2 = 87

Solving for variable 'x'.

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

Add '11' to each side of the equation.
-11 + 11 + 2x2 = 87 + 11

Combine like terms: -11 + 11 = 0
0 + 2x2 = 87 + 11
2x2 = 87 + 11

Combine like terms: 87 + 11 = 98
2x2 = 98

Divide each side by '2'.
x2 = 49

Simplifying
x2 = 49

Take the square root of each side:
x = {-7, 7}

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