25+r^2-r^2-2r-1=0

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Solution for 25+r^2-r^2-2r-1=0 equation:


Simplifying
25 + r2 + -1r2 + -2r + -1 = 0

Reorder the terms:
25 + -1 + -2r + r2 + -1r2 = 0

Combine like terms: 25 + -1 = 24
24 + -2r + r2 + -1r2 = 0

Combine like terms: r2 + -1r2 = 0
24 + -2r + 0 = 0
24 + -2r = 0

Solving
24 + -2r = 0

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-24' to each side of the equation.
24 + -24 + -2r = 0 + -24

Combine like terms: 24 + -24 = 0
0 + -2r = 0 + -24
-2r = 0 + -24

Combine like terms: 0 + -24 = -24
-2r = -24

Divide each side by '-2'.
r = 12

Simplifying
r = 12

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