x^2-5=42

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Solution for x^2-5=42 equation: 


Simplifying
x2 + -5 = 42

Reorder the terms:
-5 + x2 = 42

Solving
-5 + x2 = 42

Solving for variable 'x'.

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

Add '5' to each side of the equation.
-5 + 5 + x2 = 42 + 5

Combine like terms: -5 + 5 = 0
0 + x2 = 42 + 5
x2 = 42 + 5

Combine like terms: 42 + 5 = 47
x2 = 47

Simplifying
x2 = 47

Take the square root of each side:
x = {-6.8556546, 6.8556546}

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