10x^2-2x=1575

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Solution for 10x^2-2x=1575 equation:


Simplifying
10x2 + -2x = 1575

Reorder the terms:
-2x + 10x2 = 1575

Solving
-2x + 10x2 = 1575

Solving for variable 'x'.

Reorder the terms:
-1575 + -2x + 10x2 = 1575 + -1575

Combine like terms: 1575 + -1575 = 0
-1575 + -2x + 10x2 = 0

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

Divide each side by '10'.
-157.5 + -0.2x + x2 = 0

Move the constant term to the right:

Add '157.5' to each side of the equation.
-157.5 + -0.2x + 157.5 + x2 = 0 + 157.5

Reorder the terms:
-157.5 + 157.5 + -0.2x + x2 = 0 + 157.5

Combine like terms: -157.5 + 157.5 = 0.0
0.0 + -0.2x + x2 = 0 + 157.5
-0.2x + x2 = 0 + 157.5

Combine like terms: 0 + 157.5 = 157.5
-0.2x + x2 = 157.5

The x term is -0.2x.  Take half its coefficient (-0.1).
Square it (0.01) and add it to both sides.

Add '0.01' to each side of the equation.
-0.2x + 0.01 + x2 = 157.5 + 0.01

Reorder the terms:
0.01 + -0.2x + x2 = 157.5 + 0.01

Combine like terms: 157.5 + 0.01 = 157.51
0.01 + -0.2x + x2 = 157.51

Factor a perfect square on the left side:
(x + -0.1)(x + -0.1) = 157.51

Calculate the square root of the right side: 12.550298801

Break this problem into two subproblems by setting 
(x + -0.1) equal to 12.550298801 and -12.550298801.

Subproblem 1

x + -0.1 = 12.550298801 Simplifying x + -0.1 = 12.550298801 Reorder the terms: -0.1 + x = 12.550298801 Solving -0.1 + x = 12.550298801 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1' to each side of the equation. -0.1 + 0.1 + x = 12.550298801 + 0.1 Combine like terms: -0.1 + 0.1 = 0.0 0.0 + x = 12.550298801 + 0.1 x = 12.550298801 + 0.1 Combine like terms: 12.550298801 + 0.1 = 12.650298801 x = 12.650298801 Simplifying x = 12.650298801

Subproblem 2

x + -0.1 = -12.550298801 Simplifying x + -0.1 = -12.550298801 Reorder the terms: -0.1 + x = -12.550298801 Solving -0.1 + x = -12.550298801 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1' to each side of the equation. -0.1 + 0.1 + x = -12.550298801 + 0.1 Combine like terms: -0.1 + 0.1 = 0.0 0.0 + x = -12.550298801 + 0.1 x = -12.550298801 + 0.1 Combine like terms: -12.550298801 + 0.1 = -12.450298801 x = -12.450298801 Simplifying x = -12.450298801

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.650298801, -12.450298801}

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