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Simplifying
(a2 + 1) = 81
Reorder the terms:
(1 + a2) = 81
Remove parenthesis around (1 + a2)
1 + a2 = 81
Solving
1 + a2 = 81
Solving for variable 'a'.
Move all terms containing a to the left, all other terms to the right.
Add '-1' to each side of the equation.
1 + -1 + a2 = 81 + -1
Combine like terms: 1 + -1 = 0
0 + a2 = 81 + -1
a2 = 81 + -1
Combine like terms: 81 + -1 = 80
a2 = 80
Simplifying
a2 = 80
Take the square root of each side:
a = {-8.94427191, 8.94427191}
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