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Simplifying
2a2 + 2 = 7
Reorder the terms:
2 + 2a2 = 7
Solving
2 + 2a2 = 7
Solving for variable 'a'.
Move all terms containing a to the left, all other terms to the right.
Add '-2' to each side of the equation.
2 + -2 + 2a2 = 7 + -2
Combine like terms: 2 + -2 = 0
0 + 2a2 = 7 + -2
2a2 = 7 + -2
Combine like terms: 7 + -2 = 5
2a2 = 5
Divide each side by '2'.
a2 = 2.5
Simplifying
a2 = 2.5
Take the square root of each side:
a = {-1.58113883, 1.58113883}
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