x^2+x^2+10x+25=4x^2-50x+100

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Solution for x^2+x^2+10x+25=4x^2-50x+100 equation:


Simplifying
x2 + x2 + 10x + 25 = 4x2 + -50x + 100

Reorder the terms:
25 + 10x + x2 + x2 = 4x2 + -50x + 100

Combine like terms: x2 + x2 = 2x2
25 + 10x + 2x2 = 4x2 + -50x + 100

Reorder the terms:
25 + 10x + 2x2 = 100 + -50x + 4x2

Solving
25 + 10x + 2x2 = 100 + -50x + 4x2

Solving for variable 'x'.

Reorder the terms:
25 + -100 + 10x + 50x + 2x2 + -4x2 = 100 + -50x + 4x2 + -100 + 50x + -4x2

Combine like terms: 25 + -100 = -75
-75 + 10x + 50x + 2x2 + -4x2 = 100 + -50x + 4x2 + -100 + 50x + -4x2

Combine like terms: 10x + 50x = 60x
-75 + 60x + 2x2 + -4x2 = 100 + -50x + 4x2 + -100 + 50x + -4x2

Combine like terms: 2x2 + -4x2 = -2x2
-75 + 60x + -2x2 = 100 + -50x + 4x2 + -100 + 50x + -4x2

Reorder the terms:
-75 + 60x + -2x2 = 100 + -100 + -50x + 50x + 4x2 + -4x2

Combine like terms: 100 + -100 = 0
-75 + 60x + -2x2 = 0 + -50x + 50x + 4x2 + -4x2
-75 + 60x + -2x2 = -50x + 50x + 4x2 + -4x2

Combine like terms: -50x + 50x = 0
-75 + 60x + -2x2 = 0 + 4x2 + -4x2
-75 + 60x + -2x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
-75 + 60x + -2x2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
37.5 + -30x + x2 = 0

Move the constant term to the right:

Add '-37.5' to each side of the equation.
37.5 + -30x + -37.5 + x2 = 0 + -37.5

Reorder the terms:
37.5 + -37.5 + -30x + x2 = 0 + -37.5

Combine like terms: 37.5 + -37.5 = 0.0
0.0 + -30x + x2 = 0 + -37.5
-30x + x2 = 0 + -37.5

Combine like terms: 0 + -37.5 = -37.5
-30x + x2 = -37.5

The x term is -30x.  Take half its coefficient (-15).
Square it (225) and add it to both sides.

Add '225' to each side of the equation.
-30x + 225 + x2 = -37.5 + 225

Reorder the terms:
225 + -30x + x2 = -37.5 + 225

Combine like terms: -37.5 + 225 = 187.5
225 + -30x + x2 = 187.5

Factor a perfect square on the left side:
(x + -15)(x + -15) = 187.5

Calculate the square root of the right side: 13.693063938

Break this problem into two subproblems by setting 
(x + -15) equal to 13.693063938 and -13.693063938.

Subproblem 1

x + -15 = 13.693063938 Simplifying x + -15 = 13.693063938 Reorder the terms: -15 + x = 13.693063938 Solving -15 + x = 13.693063938 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + x = 13.693063938 + 15 Combine like terms: -15 + 15 = 0 0 + x = 13.693063938 + 15 x = 13.693063938 + 15 Combine like terms: 13.693063938 + 15 = 28.693063938 x = 28.693063938 Simplifying x = 28.693063938

Subproblem 2

x + -15 = -13.693063938 Simplifying x + -15 = -13.693063938 Reorder the terms: -15 + x = -13.693063938 Solving -15 + x = -13.693063938 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + x = -13.693063938 + 15 Combine like terms: -15 + 15 = 0 0 + x = -13.693063938 + 15 x = -13.693063938 + 15 Combine like terms: -13.693063938 + 15 = 1.306936062 x = 1.306936062 Simplifying x = 1.306936062

Solution

The solution to the problem is based on the solutions from the subproblems. x = {28.693063938, 1.306936062}

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