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Simplifying
2r2 + -14 = 0
Reorder the terms:
-14 + 2r2 = 0
Solving
-14 + 2r2 = 0
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Add '14' to each side of the equation.
-14 + 14 + 2r2 = 0 + 14
Combine like terms: -14 + 14 = 0
0 + 2r2 = 0 + 14
2r2 = 0 + 14
Combine like terms: 0 + 14 = 14
2r2 = 14
Divide each side by '2'.
r2 = 7
Simplifying
r2 = 7
Take the square root of each side:
r = {-2.645751311, 2.645751311}
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