5r*5r=26r+24

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Solution for 5r*5r=26r+24 equation:


Simplifying
5r * 5r = 26r + 24

Reorder the terms for easier multiplication:
5 * 5r * r = 26r + 24

Multiply 5 * 5
25r * r = 26r + 24

Multiply r * r
25r2 = 26r + 24

Reorder the terms:
25r2 = 24 + 26r

Solving
25r2 = 24 + 26r

Solving for variable 'r'.

Reorder the terms:
-24 + -26r + 25r2 = 24 + 26r + -24 + -26r

Reorder the terms:
-24 + -26r + 25r2 = 24 + -24 + 26r + -26r

Combine like terms: 24 + -24 = 0
-24 + -26r + 25r2 = 0 + 26r + -26r
-24 + -26r + 25r2 = 26r + -26r

Combine like terms: 26r + -26r = 0
-24 + -26r + 25r2 = 0

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

Divide each side by '25'.
-0.96 + -1.04r + r2 = 0

Move the constant term to the right:

Add '0.96' to each side of the equation.
-0.96 + -1.04r + 0.96 + r2 = 0 + 0.96

Reorder the terms:
-0.96 + 0.96 + -1.04r + r2 = 0 + 0.96

Combine like terms: -0.96 + 0.96 = 0.00
0.00 + -1.04r + r2 = 0 + 0.96
-1.04r + r2 = 0 + 0.96

Combine like terms: 0 + 0.96 = 0.96
-1.04r + r2 = 0.96

The r term is -1.04r.  Take half its coefficient (-0.52).
Square it (0.2704) and add it to both sides.

Add '0.2704' to each side of the equation.
-1.04r + 0.2704 + r2 = 0.96 + 0.2704

Reorder the terms:
0.2704 + -1.04r + r2 = 0.96 + 0.2704

Combine like terms: 0.96 + 0.2704 = 1.2304
0.2704 + -1.04r + r2 = 1.2304

Factor a perfect square on the left side:
(r + -0.52)(r + -0.52) = 1.2304

Calculate the square root of the right side: 1.10923397

Break this problem into two subproblems by setting 
(r + -0.52) equal to 1.10923397 and -1.10923397.

Subproblem 1

r + -0.52 = 1.10923397 Simplifying r + -0.52 = 1.10923397 Reorder the terms: -0.52 + r = 1.10923397 Solving -0.52 + r = 1.10923397 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '0.52' to each side of the equation. -0.52 + 0.52 + r = 1.10923397 + 0.52 Combine like terms: -0.52 + 0.52 = 0.00 0.00 + r = 1.10923397 + 0.52 r = 1.10923397 + 0.52 Combine like terms: 1.10923397 + 0.52 = 1.62923397 r = 1.62923397 Simplifying r = 1.62923397

Subproblem 2

r + -0.52 = -1.10923397 Simplifying r + -0.52 = -1.10923397 Reorder the terms: -0.52 + r = -1.10923397 Solving -0.52 + r = -1.10923397 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '0.52' to each side of the equation. -0.52 + 0.52 + r = -1.10923397 + 0.52 Combine like terms: -0.52 + 0.52 = 0.00 0.00 + r = -1.10923397 + 0.52 r = -1.10923397 + 0.52 Combine like terms: -1.10923397 + 0.52 = -0.58923397 r = -0.58923397 Simplifying r = -0.58923397

Solution

The solution to the problem is based on the solutions from the subproblems. r = {1.62923397, -0.58923397}

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