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Simplifying
5 = 3.148r * r
Multiply r * r
5 = 3.148r2
Solving
5 = 3.148r2
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Add '-3.148r2' to each side of the equation.
5 + -3.148r2 = 3.148r2 + -3.148r2
Combine like terms: 3.148r2 + -3.148r2 = 0.000
5 + -3.148r2 = 0.000
Add '-5' to each side of the equation.
5 + -5 + -3.148r2 = 0.000 + -5
Combine like terms: 5 + -5 = 0
0 + -3.148r2 = 0.000 + -5
-3.148r2 = 0.000 + -5
Combine like terms: 0.000 + -5 = -5
-3.148r2 = -5
Divide each side by '-3.148'.
r2 = 1.588310038
Simplifying
r2 = 1.588310038
Take the square root of each side:
r = {-1.26028173, 1.26028173}
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