10x+x^2=425

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Solution for 10x+x^2=425 equation:


Simplifying
10x + x2 = 425

Solving
10x + x2 = 425

Solving for variable 'x'.

Reorder the terms:
-425 + 10x + x2 = 425 + -425

Combine like terms: 425 + -425 = 0
-425 + 10x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '425' to each side of the equation.
-425 + 10x + 425 + x2 = 0 + 425

Reorder the terms:
-425 + 425 + 10x + x2 = 0 + 425

Combine like terms: -425 + 425 = 0
0 + 10x + x2 = 0 + 425
10x + x2 = 0 + 425

Combine like terms: 0 + 425 = 425
10x + x2 = 425

The x term is 10x.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10x + 25 + x2 = 425 + 25

Reorder the terms:
25 + 10x + x2 = 425 + 25

Combine like terms: 425 + 25 = 450
25 + 10x + x2 = 450

Factor a perfect square on the left side:
(x + 5)(x + 5) = 450

Calculate the square root of the right side: 21.213203436

Break this problem into two subproblems by setting 
(x + 5) equal to 21.213203436 and -21.213203436.

Subproblem 1

x + 5 = 21.213203436 Simplifying x + 5 = 21.213203436 Reorder the terms: 5 + x = 21.213203436 Solving 5 + x = 21.213203436 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 21.213203436 + -5 Combine like terms: 5 + -5 = 0 0 + x = 21.213203436 + -5 x = 21.213203436 + -5 Combine like terms: 21.213203436 + -5 = 16.213203436 x = 16.213203436 Simplifying x = 16.213203436

Subproblem 2

x + 5 = -21.213203436 Simplifying x + 5 = -21.213203436 Reorder the terms: 5 + x = -21.213203436 Solving 5 + x = -21.213203436 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -21.213203436 + -5 Combine like terms: 5 + -5 = 0 0 + x = -21.213203436 + -5 x = -21.213203436 + -5 Combine like terms: -21.213203436 + -5 = -26.213203436 x = -26.213203436 Simplifying x = -26.213203436

Solution

The solution to the problem is based on the solutions from the subproblems. x = {16.213203436, -26.213203436}

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