-10x-38=-x^2-3x-10

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Solution for -10x-38=-x^2-3x-10 equation:


Simplifying
-10x + -38 = -1x2 + -3x + -10

Reorder the terms:
-38 + -10x = -1x2 + -3x + -10

Reorder the terms:
-38 + -10x = -10 + -3x + -1x2

Solving
-38 + -10x = -10 + -3x + -1x2

Solving for variable 'x'.

Reorder the terms:
-38 + 10 + -10x + 3x + x2 = -10 + -3x + -1x2 + 10 + 3x + x2

Combine like terms: -38 + 10 = -28
-28 + -10x + 3x + x2 = -10 + -3x + -1x2 + 10 + 3x + x2

Combine like terms: -10x + 3x = -7x
-28 + -7x + x2 = -10 + -3x + -1x2 + 10 + 3x + x2

Reorder the terms:
-28 + -7x + x2 = -10 + 10 + -3x + 3x + -1x2 + x2

Combine like terms: -10 + 10 = 0
-28 + -7x + x2 = 0 + -3x + 3x + -1x2 + x2
-28 + -7x + x2 = -3x + 3x + -1x2 + x2

Combine like terms: -3x + 3x = 0
-28 + -7x + x2 = 0 + -1x2 + x2
-28 + -7x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
-28 + -7x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '28' to each side of the equation.
-28 + -7x + 28 + x2 = 0 + 28

Reorder the terms:
-28 + 28 + -7x + x2 = 0 + 28

Combine like terms: -28 + 28 = 0
0 + -7x + x2 = 0 + 28
-7x + x2 = 0 + 28

Combine like terms: 0 + 28 = 28
-7x + x2 = 28

The x term is -7x.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7x + 12.25 + x2 = 28 + 12.25

Reorder the terms:
12.25 + -7x + x2 = 28 + 12.25

Combine like terms: 28 + 12.25 = 40.25
12.25 + -7x + x2 = 40.25

Factor a perfect square on the left side:
(x + -3.5)(x + -3.5) = 40.25

Calculate the square root of the right side: 6.34428877

Break this problem into two subproblems by setting 
(x + -3.5) equal to 6.34428877 and -6.34428877.

Subproblem 1

x + -3.5 = 6.34428877 Simplifying x + -3.5 = 6.34428877 Reorder the terms: -3.5 + x = 6.34428877 Solving -3.5 + x = 6.34428877 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + x = 6.34428877 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = 6.34428877 + 3.5 x = 6.34428877 + 3.5 Combine like terms: 6.34428877 + 3.5 = 9.84428877 x = 9.84428877 Simplifying x = 9.84428877

Subproblem 2

x + -3.5 = -6.34428877 Simplifying x + -3.5 = -6.34428877 Reorder the terms: -3.5 + x = -6.34428877 Solving -3.5 + x = -6.34428877 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + x = -6.34428877 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = -6.34428877 + 3.5 x = -6.34428877 + 3.5 Combine like terms: -6.34428877 + 3.5 = -2.84428877 x = -2.84428877 Simplifying x = -2.84428877

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.84428877, -2.84428877}

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