7x^2=75x-22

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Solution for 7x^2=75x-22 equation:


Simplifying
7x2 = 75x + -22

Reorder the terms:
7x2 = -22 + 75x

Solving
7x2 = -22 + 75x

Solving for variable 'x'.

Reorder the terms:
22 + -75x + 7x2 = -22 + 75x + 22 + -75x

Reorder the terms:
22 + -75x + 7x2 = -22 + 22 + 75x + -75x

Combine like terms: -22 + 22 = 0
22 + -75x + 7x2 = 0 + 75x + -75x
22 + -75x + 7x2 = 75x + -75x

Combine like terms: 75x + -75x = 0
22 + -75x + 7x2 = 0

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

Divide each side by '7'.
3.142857143 + -10.71428571x + x2 = 0

Move the constant term to the right:

Add '-3.142857143' to each side of the equation.
3.142857143 + -10.71428571x + -3.142857143 + x2 = 0 + -3.142857143

Reorder the terms:
3.142857143 + -3.142857143 + -10.71428571x + x2 = 0 + -3.142857143

Combine like terms: 3.142857143 + -3.142857143 = 0.000000000
0.000000000 + -10.71428571x + x2 = 0 + -3.142857143
-10.71428571x + x2 = 0 + -3.142857143

Combine like terms: 0 + -3.142857143 = -3.142857143
-10.71428571x + x2 = -3.142857143

The x term is -10.71428571x.  Take half its coefficient (-5.357142855).
Square it (28.69897957) and add it to both sides.

Add '28.69897957' to each side of the equation.
-10.71428571x + 28.69897957 + x2 = -3.142857143 + 28.69897957

Reorder the terms:
28.69897957 + -10.71428571x + x2 = -3.142857143 + 28.69897957

Combine like terms: -3.142857143 + 28.69897957 = 25.556122427
28.69897957 + -10.71428571x + x2 = 25.556122427

Factor a perfect square on the left side:
(x + -5.357142855)(x + -5.357142855) = 25.556122427

Calculate the square root of the right side: 5.055306363

Break this problem into two subproblems by setting 
(x + -5.357142855) equal to 5.055306363 and -5.055306363.

Subproblem 1

x + -5.357142855 = 5.055306363 Simplifying x + -5.357142855 = 5.055306363 Reorder the terms: -5.357142855 + x = 5.055306363 Solving -5.357142855 + x = 5.055306363 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.357142855' to each side of the equation. -5.357142855 + 5.357142855 + x = 5.055306363 + 5.357142855 Combine like terms: -5.357142855 + 5.357142855 = 0.000000000 0.000000000 + x = 5.055306363 + 5.357142855 x = 5.055306363 + 5.357142855 Combine like terms: 5.055306363 + 5.357142855 = 10.412449218 x = 10.412449218 Simplifying x = 10.412449218

Subproblem 2

x + -5.357142855 = -5.055306363 Simplifying x + -5.357142855 = -5.055306363 Reorder the terms: -5.357142855 + x = -5.055306363 Solving -5.357142855 + x = -5.055306363 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.357142855' to each side of the equation. -5.357142855 + 5.357142855 + x = -5.055306363 + 5.357142855 Combine like terms: -5.357142855 + 5.357142855 = 0.000000000 0.000000000 + x = -5.055306363 + 5.357142855 x = -5.055306363 + 5.357142855 Combine like terms: -5.055306363 + 5.357142855 = 0.301836492 x = 0.301836492 Simplifying x = 0.301836492

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.412449218, 0.301836492}

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