(x-5)(x+2)=53

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Solution for (x-5)(x+2)=53 equation:


Simplifying
(x + -5)(x + 2) = 53

Reorder the terms:
(-5 + x)(x + 2) = 53

Reorder the terms:
(-5 + x)(2 + x) = 53

Multiply (-5 + x) * (2 + x)
(-5(2 + x) + x(2 + x)) = 53
((2 * -5 + x * -5) + x(2 + x)) = 53
((-10 + -5x) + x(2 + x)) = 53
(-10 + -5x + (2 * x + x * x)) = 53
(-10 + -5x + (2x + x2)) = 53

Combine like terms: -5x + 2x = -3x
(-10 + -3x + x2) = 53

Solving
-10 + -3x + x2 = 53

Solving for variable 'x'.

Reorder the terms:
-10 + -53 + -3x + x2 = 53 + -53

Combine like terms: -10 + -53 = -63
-63 + -3x + x2 = 53 + -53

Combine like terms: 53 + -53 = 0
-63 + -3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '63' to each side of the equation.
-63 + -3x + 63 + x2 = 0 + 63

Reorder the terms:
-63 + 63 + -3x + x2 = 0 + 63

Combine like terms: -63 + 63 = 0
0 + -3x + x2 = 0 + 63
-3x + x2 = 0 + 63

Combine like terms: 0 + 63 = 63
-3x + x2 = 63

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 63 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 63 + 2.25

Combine like terms: 63 + 2.25 = 65.25
2.25 + -3x + x2 = 65.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 65.25

Calculate the square root of the right side: 8.077747211

Break this problem into two subproblems by setting 
(x + -1.5) equal to 8.077747211 and -8.077747211.

Subproblem 1

x + -1.5 = 8.077747211 Simplifying x + -1.5 = 8.077747211 Reorder the terms: -1.5 + x = 8.077747211 Solving -1.5 + x = 8.077747211 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 8.077747211 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 8.077747211 + 1.5 x = 8.077747211 + 1.5 Combine like terms: 8.077747211 + 1.5 = 9.577747211 x = 9.577747211 Simplifying x = 9.577747211

Subproblem 2

x + -1.5 = -8.077747211 Simplifying x + -1.5 = -8.077747211 Reorder the terms: -1.5 + x = -8.077747211 Solving -1.5 + x = -8.077747211 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -8.077747211 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -8.077747211 + 1.5 x = -8.077747211 + 1.5 Combine like terms: -8.077747211 + 1.5 = -6.577747211 x = -6.577747211 Simplifying x = -6.577747211

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.577747211, -6.577747211}

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