0.75x+x*x=50

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Solution for 0.75x+x*x=50 equation:


Simplifying
0.75x + x * x = 50

Multiply x * x
0.75x + x2 = 50

Solving
0.75x + x2 = 50

Solving for variable 'x'.

Reorder the terms:
-50 + 0.75x + x2 = 50 + -50

Combine like terms: 50 + -50 = 0
-50 + 0.75x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '50' to each side of the equation.
-50 + 0.75x + 50 + x2 = 0 + 50

Reorder the terms:
-50 + 50 + 0.75x + x2 = 0 + 50

Combine like terms: -50 + 50 = 0
0 + 0.75x + x2 = 0 + 50
0.75x + x2 = 0 + 50

Combine like terms: 0 + 50 = 50
0.75x + x2 = 50

The x term is 0.75x.  Take half its coefficient (0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
0.75x + 0.140625 + x2 = 50 + 0.140625

Reorder the terms:
0.140625 + 0.75x + x2 = 50 + 0.140625

Combine like terms: 50 + 0.140625 = 50.140625
0.140625 + 0.75x + x2 = 50.140625

Factor a perfect square on the left side:
(x + 0.375)(x + 0.375) = 50.140625

Calculate the square root of the right side: 7.081004519

Break this problem into two subproblems by setting 
(x + 0.375) equal to 7.081004519 and -7.081004519.

Subproblem 1

x + 0.375 = 7.081004519 Simplifying x + 0.375 = 7.081004519 Reorder the terms: 0.375 + x = 7.081004519 Solving 0.375 + x = 7.081004519 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + x = 7.081004519 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + x = 7.081004519 + -0.375 x = 7.081004519 + -0.375 Combine like terms: 7.081004519 + -0.375 = 6.706004519 x = 6.706004519 Simplifying x = 6.706004519

Subproblem 2

x + 0.375 = -7.081004519 Simplifying x + 0.375 = -7.081004519 Reorder the terms: 0.375 + x = -7.081004519 Solving 0.375 + x = -7.081004519 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + x = -7.081004519 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + x = -7.081004519 + -0.375 x = -7.081004519 + -0.375 Combine like terms: -7.081004519 + -0.375 = -7.456004519 x = -7.456004519 Simplifying x = -7.456004519

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.706004519, -7.456004519}

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