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Simplifying
19.36 = r2
Solving
19.36 = r2
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Add '-1r2' to each side of the equation.
19.36 + -1r2 = r2 + -1r2
Combine like terms: r2 + -1r2 = 0
19.36 + -1r2 = 0
Add '-19.36' to each side of the equation.
19.36 + -19.36 + -1r2 = 0 + -19.36
Combine like terms: 19.36 + -19.36 = 0.00
0.00 + -1r2 = 0 + -19.36
-1r2 = 0 + -19.36
Combine like terms: 0 + -19.36 = -19.36
-1r2 = -19.36
Divide each side by '-1'.
r2 = 19.36
Simplifying
r2 = 19.36
Take the square root of each side:
r = {-4.4, 4.4}
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