x^2-7x=1100

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Solution for x^2-7x=1100 equation:


Simplifying
x2 + -7x = 1100

Reorder the terms:
-7x + x2 = 1100

Solving
-7x + x2 = 1100

Solving for variable 'x'.

Reorder the terms:
-1100 + -7x + x2 = 1100 + -1100

Combine like terms: 1100 + -1100 = 0
-1100 + -7x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '1100' to each side of the equation.
-1100 + -7x + 1100 + x2 = 0 + 1100

Reorder the terms:
-1100 + 1100 + -7x + x2 = 0 + 1100

Combine like terms: -1100 + 1100 = 0
0 + -7x + x2 = 0 + 1100
-7x + x2 = 0 + 1100

Combine like terms: 0 + 1100 = 1100
-7x + x2 = 1100

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 = 1100 + 12.25

Reorder the terms:
12.25 + -7x + x2 = 1100 + 12.25

Combine like terms: 1100 + 12.25 = 1112.25
12.25 + -7x + x2 = 1112.25

Factor a perfect square on the left side:
(x + -3.5)(x + -3.5) = 1112.25

Calculate the square root of the right side: 33.350412291

Break this problem into two subproblems by setting 
(x + -3.5) equal to 33.350412291 and -33.350412291.

Subproblem 1

x + -3.5 = 33.350412291 Simplifying x + -3.5 = 33.350412291 Reorder the terms: -3.5 + x = 33.350412291 Solving -3.5 + x = 33.350412291 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 = 33.350412291 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = 33.350412291 + 3.5 x = 33.350412291 + 3.5 Combine like terms: 33.350412291 + 3.5 = 36.850412291 x = 36.850412291 Simplifying x = 36.850412291

Subproblem 2

x + -3.5 = -33.350412291 Simplifying x + -3.5 = -33.350412291 Reorder the terms: -3.5 + x = -33.350412291 Solving -3.5 + x = -33.350412291 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 = -33.350412291 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = -33.350412291 + 3.5 x = -33.350412291 + 3.5 Combine like terms: -33.350412291 + 3.5 = -29.850412291 x = -29.850412291 Simplifying x = -29.850412291

Solution

The solution to the problem is based on the solutions from the subproblems. x = {36.850412291, -29.850412291}

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