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Simplifying
a2 + -8a2 + 12 = 0
Reorder the terms:
12 + a2 + -8a2 = 0
Combine like terms: a2 + -8a2 = -7a2
12 + -7a2 = 0
Solving
12 + -7a2 = 0
Solving for variable 'a'.
Move all terms containing a to the left, all other terms to the right.
Add '-12' to each side of the equation.
12 + -12 + -7a2 = 0 + -12
Combine like terms: 12 + -12 = 0
0 + -7a2 = 0 + -12
-7a2 = 0 + -12
Combine like terms: 0 + -12 = -12
-7a2 = -12
Divide each side by '-7'.
a2 = 1.714285714
Simplifying
a2 = 1.714285714
Take the square root of each side:
a = {-1.309307341, 1.309307341}
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