x^2-7x-32=9

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Solution for x^2-7x-32=9 equation:


Simplifying
x2 + -7x + -32 = 9

Reorder the terms:
-32 + -7x + x2 = 9

Solving
-32 + -7x + x2 = 9

Solving for variable 'x'.

Reorder the terms:
-32 + -9 + -7x + x2 = 9 + -9

Combine like terms: -32 + -9 = -41
-41 + -7x + x2 = 9 + -9

Combine like terms: 9 + -9 = 0
-41 + -7x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '41' to each side of the equation.
-41 + -7x + 41 + x2 = 0 + 41

Reorder the terms:
-41 + 41 + -7x + x2 = 0 + 41

Combine like terms: -41 + 41 = 0
0 + -7x + x2 = 0 + 41
-7x + x2 = 0 + 41

Combine like terms: 0 + 41 = 41
-7x + x2 = 41

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 = 41 + 12.25

Reorder the terms:
12.25 + -7x + x2 = 41 + 12.25

Combine like terms: 41 + 12.25 = 53.25
12.25 + -7x + x2 = 53.25

Factor a perfect square on the left side:
(x + -3.5)(x + -3.5) = 53.25

Calculate the square root of the right side: 7.29725976

Break this problem into two subproblems by setting 
(x + -3.5) equal to 7.29725976 and -7.29725976.

Subproblem 1

x + -3.5 = 7.29725976 Simplifying x + -3.5 = 7.29725976 Reorder the terms: -3.5 + x = 7.29725976 Solving -3.5 + x = 7.29725976 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 = 7.29725976 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = 7.29725976 + 3.5 x = 7.29725976 + 3.5 Combine like terms: 7.29725976 + 3.5 = 10.79725976 x = 10.79725976 Simplifying x = 10.79725976

Subproblem 2

x + -3.5 = -7.29725976 Simplifying x + -3.5 = -7.29725976 Reorder the terms: -3.5 + x = -7.29725976 Solving -3.5 + x = -7.29725976 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 = -7.29725976 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = -7.29725976 + 3.5 x = -7.29725976 + 3.5 Combine like terms: -7.29725976 + 3.5 = -3.79725976 x = -3.79725976 Simplifying x = -3.79725976

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.79725976, -3.79725976}

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