5x^2-48x-100=0

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Solution for 5x^2-48x-100=0 equation:


Simplifying
5x2 + -48x + -100 = 0

Reorder the terms:
-100 + -48x + 5x2 = 0

Solving
-100 + -48x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-20 + -9.6x + x2 = 0

Move the constant term to the right:

Add '20' to each side of the equation.
-20 + -9.6x + 20 + x2 = 0 + 20

Reorder the terms:
-20 + 20 + -9.6x + x2 = 0 + 20

Combine like terms: -20 + 20 = 0
0 + -9.6x + x2 = 0 + 20
-9.6x + x2 = 0 + 20

Combine like terms: 0 + 20 = 20
-9.6x + x2 = 20

The x term is -9.6x.  Take half its coefficient (-4.8).
Square it (23.04) and add it to both sides.

Add '23.04' to each side of the equation.
-9.6x + 23.04 + x2 = 20 + 23.04

Reorder the terms:
23.04 + -9.6x + x2 = 20 + 23.04

Combine like terms: 20 + 23.04 = 43.04
23.04 + -9.6x + x2 = 43.04

Factor a perfect square on the left side:
(x + -4.8)(x + -4.8) = 43.04

Calculate the square root of the right side: 6.560487787

Break this problem into two subproblems by setting 
(x + -4.8) equal to 6.560487787 and -6.560487787.

Subproblem 1

x + -4.8 = 6.560487787 Simplifying x + -4.8 = 6.560487787 Reorder the terms: -4.8 + x = 6.560487787 Solving -4.8 + x = 6.560487787 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.8' to each side of the equation. -4.8 + 4.8 + x = 6.560487787 + 4.8 Combine like terms: -4.8 + 4.8 = 0.0 0.0 + x = 6.560487787 + 4.8 x = 6.560487787 + 4.8 Combine like terms: 6.560487787 + 4.8 = 11.360487787 x = 11.360487787 Simplifying x = 11.360487787

Subproblem 2

x + -4.8 = -6.560487787 Simplifying x + -4.8 = -6.560487787 Reorder the terms: -4.8 + x = -6.560487787 Solving -4.8 + x = -6.560487787 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.8' to each side of the equation. -4.8 + 4.8 + x = -6.560487787 + 4.8 Combine like terms: -4.8 + 4.8 = 0.0 0.0 + x = -6.560487787 + 4.8 x = -6.560487787 + 4.8 Combine like terms: -6.560487787 + 4.8 = -1.760487787 x = -1.760487787 Simplifying x = -1.760487787

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.360487787, -1.760487787}

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