50x^2-10=7x+75

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Solution for 50x^2-10=7x+75 equation:


Simplifying
50x2 + -10 = 7x + 75

Reorder the terms:
-10 + 50x2 = 7x + 75

Reorder the terms:
-10 + 50x2 = 75 + 7x

Solving
-10 + 50x2 = 75 + 7x

Solving for variable 'x'.

Reorder the terms:
-10 + -75 + -7x + 50x2 = 75 + 7x + -75 + -7x

Combine like terms: -10 + -75 = -85
-85 + -7x + 50x2 = 75 + 7x + -75 + -7x

Reorder the terms:
-85 + -7x + 50x2 = 75 + -75 + 7x + -7x

Combine like terms: 75 + -75 = 0
-85 + -7x + 50x2 = 0 + 7x + -7x
-85 + -7x + 50x2 = 7x + -7x

Combine like terms: 7x + -7x = 0
-85 + -7x + 50x2 = 0

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

Divide each side by '50'.
-1.7 + -0.14x + x2 = 0

Move the constant term to the right:

Add '1.7' to each side of the equation.
-1.7 + -0.14x + 1.7 + x2 = 0 + 1.7

Reorder the terms:
-1.7 + 1.7 + -0.14x + x2 = 0 + 1.7

Combine like terms: -1.7 + 1.7 = 0.0
0.0 + -0.14x + x2 = 0 + 1.7
-0.14x + x2 = 0 + 1.7

Combine like terms: 0 + 1.7 = 1.7
-0.14x + x2 = 1.7

The x term is -0.14x.  Take half its coefficient (-0.07).
Square it (0.0049) and add it to both sides.

Add '0.0049' to each side of the equation.
-0.14x + 0.0049 + x2 = 1.7 + 0.0049

Reorder the terms:
0.0049 + -0.14x + x2 = 1.7 + 0.0049

Combine like terms: 1.7 + 0.0049 = 1.7049
0.0049 + -0.14x + x2 = 1.7049

Factor a perfect square on the left side:
(x + -0.07)(x + -0.07) = 1.7049

Calculate the square root of the right side: 1.305718193

Break this problem into two subproblems by setting 
(x + -0.07) equal to 1.305718193 and -1.305718193.

Subproblem 1

x + -0.07 = 1.305718193 Simplifying x + -0.07 = 1.305718193 Reorder the terms: -0.07 + x = 1.305718193 Solving -0.07 + x = 1.305718193 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.07' to each side of the equation. -0.07 + 0.07 + x = 1.305718193 + 0.07 Combine like terms: -0.07 + 0.07 = 0.00 0.00 + x = 1.305718193 + 0.07 x = 1.305718193 + 0.07 Combine like terms: 1.305718193 + 0.07 = 1.375718193 x = 1.375718193 Simplifying x = 1.375718193

Subproblem 2

x + -0.07 = -1.305718193 Simplifying x + -0.07 = -1.305718193 Reorder the terms: -0.07 + x = -1.305718193 Solving -0.07 + x = -1.305718193 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.07' to each side of the equation. -0.07 + 0.07 + x = -1.305718193 + 0.07 Combine like terms: -0.07 + 0.07 = 0.00 0.00 + x = -1.305718193 + 0.07 x = -1.305718193 + 0.07 Combine like terms: -1.305718193 + 0.07 = -1.235718193 x = -1.235718193 Simplifying x = -1.235718193

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.375718193, -1.235718193}

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