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Simplifying
100 = a2 + 7 * 7
Multiply 7 * 7
100 = a2 + 49
Reorder the terms:
100 = 49 + a2
Solving
100 = 49 + a2
Solving for variable 'a'.
Move all terms containing a to the left, all other terms to the right.
Add '-1a2' to each side of the equation.
100 + -1a2 = 49 + a2 + -1a2
Combine like terms: a2 + -1a2 = 0
100 + -1a2 = 49 + 0
100 + -1a2 = 49
Add '-100' to each side of the equation.
100 + -100 + -1a2 = 49 + -100
Combine like terms: 100 + -100 = 0
0 + -1a2 = 49 + -100
-1a2 = 49 + -100
Combine like terms: 49 + -100 = -51
-1a2 = -51
Divide each side by '-1'.
a2 = 51
Simplifying
a2 = 51
Take the square root of each side:
a = {-7.141428429, 7.141428429}
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