2x^2-10=90

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Solution for 2x^2-10=90 equation:


Simplifying
2x2 + -10 = 90

Reorder the terms:
-10 + 2x2 = 90

Solving
-10 + 2x2 = 90

Solving for variable 'x'.

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

Add '10' to each side of the equation.
-10 + 10 + 2x2 = 90 + 10

Combine like terms: -10 + 10 = 0
0 + 2x2 = 90 + 10
2x2 = 90 + 10

Combine like terms: 90 + 10 = 100
2x2 = 100

Divide each side by '2'.
x2 = 50

Simplifying
x2 = 50

Take the square root of each side:
x = {-7.071067812, 7.071067812}

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