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Simplifying
3a2 + 11 = 20
Reorder the terms:
11 + 3a2 = 20
Solving
11 + 3a2 = 20
Solving for variable 'a'.
Move all terms containing a to the left, all other terms to the right.
Add '-11' to each side of the equation.
11 + -11 + 3a2 = 20 + -11
Combine like terms: 11 + -11 = 0
0 + 3a2 = 20 + -11
3a2 = 20 + -11
Combine like terms: 20 + -11 = 9
3a2 = 9
Divide each side by '3'.
a2 = 3
Simplifying
a2 = 3
Take the square root of each side:
a = {-1.732050808, 1.732050808}
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