25x^2+98=100x

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Solution for 25x^2+98=100x equation:


Simplifying
25x2 + 98 = 100x

Reorder the terms:
98 + 25x2 = 100x

Solving
98 + 25x2 = 100x

Solving for variable 'x'.

Reorder the terms:
98 + -100x + 25x2 = 100x + -100x

Combine like terms: 100x + -100x = 0
98 + -100x + 25x2 = 0

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

Divide each side by '25'.
3.92 + -4x + x2 = 0

Move the constant term to the right:

Add '-3.92' to each side of the equation.
3.92 + -4x + -3.92 + x2 = 0 + -3.92

Reorder the terms:
3.92 + -3.92 + -4x + x2 = 0 + -3.92

Combine like terms: 3.92 + -3.92 = 0.00
0.00 + -4x + x2 = 0 + -3.92
-4x + x2 = 0 + -3.92

Combine like terms: 0 + -3.92 = -3.92
-4x + x2 = -3.92

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = -3.92 + 4

Reorder the terms:
4 + -4x + x2 = -3.92 + 4

Combine like terms: -3.92 + 4 = 0.08
4 + -4x + x2 = 0.08

Factor a perfect square on the left side:
(x + -2)(x + -2) = 0.08

Calculate the square root of the right side: 0.282842712

Break this problem into two subproblems by setting 
(x + -2) equal to 0.282842712 and -0.282842712.

Subproblem 1

x + -2 = 0.282842712 Simplifying x + -2 = 0.282842712 Reorder the terms: -2 + x = 0.282842712 Solving -2 + x = 0.282842712 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 0.282842712 + 2 Combine like terms: -2 + 2 = 0 0 + x = 0.282842712 + 2 x = 0.282842712 + 2 Combine like terms: 0.282842712 + 2 = 2.282842712 x = 2.282842712 Simplifying x = 2.282842712

Subproblem 2

x + -2 = -0.282842712 Simplifying x + -2 = -0.282842712 Reorder the terms: -2 + x = -0.282842712 Solving -2 + x = -0.282842712 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -0.282842712 + 2 Combine like terms: -2 + 2 = 0 0 + x = -0.282842712 + 2 x = -0.282842712 + 2 Combine like terms: -0.282842712 + 2 = 1.717157288 x = 1.717157288 Simplifying x = 1.717157288

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.282842712, 1.717157288}

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