5x^2-18=-2+x^2

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Solution for 5x^2-18=-2+x^2 equation:


Simplifying
5x2 + -18 = -2 + x2

Reorder the terms:
-18 + 5x2 = -2 + x2

Solving
-18 + 5x2 = -2 + x2

Solving for variable 'x'.

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

Add '-1x2' to each side of the equation.
-18 + 5x2 + -1x2 = -2 + x2 + -1x2

Combine like terms: 5x2 + -1x2 = 4x2
-18 + 4x2 = -2 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-18 + 4x2 = -2 + 0
-18 + 4x2 = -2

Add '18' to each side of the equation.
-18 + 18 + 4x2 = -2 + 18

Combine like terms: -18 + 18 = 0
0 + 4x2 = -2 + 18
4x2 = -2 + 18

Combine like terms: -2 + 18 = 16
4x2 = 16

Divide each side by '4'.
x2 = 4

Simplifying
x2 = 4

Take the square root of each side:
x = {-2, 2}

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