57r^2-17r=3

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Solution for 57r^2-17r=3 equation:


Simplifying
57r2 + -17r = 3

Reorder the terms:
-17r + 57r2 = 3

Solving
-17r + 57r2 = 3

Solving for variable 'r'.

Reorder the terms:
-3 + -17r + 57r2 = 3 + -3

Combine like terms: 3 + -3 = 0
-3 + -17r + 57r2 = 0

Begin completing the square.  Divide all terms by
57 the coefficient of the squared term: 

Divide each side by '57'.
-0.05263157895 + -0.298245614r + r2 = 0

Move the constant term to the right:

Add '0.05263157895' to each side of the equation.
-0.05263157895 + -0.298245614r + 0.05263157895 + r2 = 0 + 0.05263157895

Reorder the terms:
-0.05263157895 + 0.05263157895 + -0.298245614r + r2 = 0 + 0.05263157895

Combine like terms: -0.05263157895 + 0.05263157895 = 0.00000000000
0.00000000000 + -0.298245614r + r2 = 0 + 0.05263157895
-0.298245614r + r2 = 0 + 0.05263157895

Combine like terms: 0 + 0.05263157895 = 0.05263157895
-0.298245614r + r2 = 0.05263157895

The r term is -0.298245614r.  Take half its coefficient (-0.149122807).
Square it (0.02223761157) and add it to both sides.

Add '0.02223761157' to each side of the equation.
-0.298245614r + 0.02223761157 + r2 = 0.05263157895 + 0.02223761157

Reorder the terms:
0.02223761157 + -0.298245614r + r2 = 0.05263157895 + 0.02223761157

Combine like terms: 0.05263157895 + 0.02223761157 = 0.07486919052
0.02223761157 + -0.298245614r + r2 = 0.07486919052

Factor a perfect square on the left side:
(r + -0.149122807)(r + -0.149122807) = 0.07486919052

Calculate the square root of the right side: 0.27362235

Break this problem into two subproblems by setting 
(r + -0.149122807) equal to 0.27362235 and -0.27362235.

Subproblem 1

r + -0.149122807 = 0.27362235 Simplifying r + -0.149122807 = 0.27362235 Reorder the terms: -0.149122807 + r = 0.27362235 Solving -0.149122807 + r = 0.27362235 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '0.149122807' to each side of the equation. -0.149122807 + 0.149122807 + r = 0.27362235 + 0.149122807 Combine like terms: -0.149122807 + 0.149122807 = 0.000000000 0.000000000 + r = 0.27362235 + 0.149122807 r = 0.27362235 + 0.149122807 Combine like terms: 0.27362235 + 0.149122807 = 0.422745157 r = 0.422745157 Simplifying r = 0.422745157

Subproblem 2

r + -0.149122807 = -0.27362235 Simplifying r + -0.149122807 = -0.27362235 Reorder the terms: -0.149122807 + r = -0.27362235 Solving -0.149122807 + r = -0.27362235 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '0.149122807' to each side of the equation. -0.149122807 + 0.149122807 + r = -0.27362235 + 0.149122807 Combine like terms: -0.149122807 + 0.149122807 = 0.000000000 0.000000000 + r = -0.27362235 + 0.149122807 r = -0.27362235 + 0.149122807 Combine like terms: -0.27362235 + 0.149122807 = -0.124499543 r = -0.124499543 Simplifying r = -0.124499543

Solution

The solution to the problem is based on the solutions from the subproblems. r = {0.422745157, -0.124499543}

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