R^2-18r+21=

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Solution for R^2-18r+21= equation:


Simplifying
R2 + -18r + 21 = 0

Reorder the terms:
21 + R2 + -18r = 0

Solving
21 + R2 + -18r = 0

Solving for variable 'R'.

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

Add '-21' to each side of the equation.
21 + R2 + -21 + -18r = 0 + -21

Reorder the terms:
21 + -21 + R2 + -18r = 0 + -21

Combine like terms: 21 + -21 = 0
0 + R2 + -18r = 0 + -21
R2 + -18r = 0 + -21

Combine like terms: 0 + -21 = -21
R2 + -18r = -21

Add '18r' to each side of the equation.
R2 + -18r + 18r = -21 + 18r

Combine like terms: -18r + 18r = 0
R2 + 0 = -21 + 18r
R2 = -21 + 18r

Simplifying
R2 = -21 + 18r

Reorder the terms:
21 + R2 + -18r = -21 + 18r + 21 + -18r

Reorder the terms:
21 + R2 + -18r = -21 + 21 + 18r + -18r

Combine like terms: -21 + 21 = 0
21 + R2 + -18r = 0 + 18r + -18r
21 + R2 + -18r = 18r + -18r

Combine like terms: 18r + -18r = 0
21 + R2 + -18r = 0

The solution to this equation could not be determined.

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