X^2-7-18=0

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Solution for X^2-7-18=0 equation:


Simplifying
X2 + -7 + -18 = 0

Reorder the terms:
-7 + -18 + X2 = 0

Combine like terms: -7 + -18 = -25
-25 + X2 = 0

Solving
-25 + X2 = 0

Solving for variable 'X'.

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

Add '25' to each side of the equation.
-25 + 25 + X2 = 0 + 25

Combine like terms: -25 + 25 = 0
0 + X2 = 0 + 25
X2 = 0 + 25

Combine like terms: 0 + 25 = 25
X2 = 25

Simplifying
X2 = 25

Take the square root of each side:
X = {-5, 5}

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