a^2-49=

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Solution for a^2-49= equation: 


Simplifying
a2 + -49 = 0

Reorder the terms:
-49 + a2 = 0

Solving
-49 + a2 = 0

Solving for variable 'a'.

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

Add '49' to each side of the equation.
-49 + 49 + a2 = 0 + 49

Combine like terms: -49 + 49 = 0
0 + a2 = 0 + 49
a2 = 0 + 49

Combine like terms: 0 + 49 = 49
a2 = 49

Simplifying
a2 = 49

Take the square root of each side:
a = {-7, 7}

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