a^2+4=72

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Solution for a^2+4=72 equation: 


Simplifying
a2 + 4 = 72

Reorder the terms:
4 + a2 = 72

Solving
4 + a2 = 72

Solving for variable 'a'.

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

Add '-4' to each side of the equation.
4 + -4 + a2 = 72 + -4

Combine like terms: 4 + -4 = 0
0 + a2 = 72 + -4
a2 = 72 + -4

Combine like terms: 72 + -4 = 68
a2 = 68

Simplifying
a2 = 68

Take the square root of each side:
a = {-8.246211251, 8.246211251}

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