(x-4)*(x+3)=93

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Solution for (x-4)*(x+3)=93 equation:


Simplifying
(x + -4)(x + 3) = 93

Reorder the terms:
(-4 + x)(x + 3) = 93

Reorder the terms:
(-4 + x)(3 + x) = 93

Multiply (-4 + x) * (3 + x)
(-4(3 + x) + x(3 + x)) = 93
((3 * -4 + x * -4) + x(3 + x)) = 93
((-12 + -4x) + x(3 + x)) = 93
(-12 + -4x + (3 * x + x * x)) = 93
(-12 + -4x + (3x + x2)) = 93

Combine like terms: -4x + 3x = -1x
(-12 + -1x + x2) = 93

Solving
-12 + -1x + x2 = 93

Solving for variable 'x'.

Reorder the terms:
-12 + -93 + -1x + x2 = 93 + -93

Combine like terms: -12 + -93 = -105
-105 + -1x + x2 = 93 + -93

Combine like terms: 93 + -93 = 0
-105 + -1x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '105' to each side of the equation.
-105 + -1x + 105 + x2 = 0 + 105

Reorder the terms:
-105 + 105 + -1x + x2 = 0 + 105

Combine like terms: -105 + 105 = 0
0 + -1x + x2 = 0 + 105
-1x + x2 = 0 + 105

Combine like terms: 0 + 105 = 105
-1x + x2 = 105

The x term is -1x.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1x + 0.25 + x2 = 105 + 0.25

Reorder the terms:
0.25 + -1x + x2 = 105 + 0.25

Combine like terms: 105 + 0.25 = 105.25
0.25 + -1x + x2 = 105.25

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = 105.25

Calculate the square root of the right side: 10.259142264

Break this problem into two subproblems by setting 
(x + -0.5) equal to 10.259142264 and -10.259142264.

Subproblem 1

x + -0.5 = 10.259142264 Simplifying x + -0.5 = 10.259142264 Reorder the terms: -0.5 + x = 10.259142264 Solving -0.5 + x = 10.259142264 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 10.259142264 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 10.259142264 + 0.5 x = 10.259142264 + 0.5 Combine like terms: 10.259142264 + 0.5 = 10.759142264 x = 10.759142264 Simplifying x = 10.759142264

Subproblem 2

x + -0.5 = -10.259142264 Simplifying x + -0.5 = -10.259142264 Reorder the terms: -0.5 + x = -10.259142264 Solving -0.5 + x = -10.259142264 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -10.259142264 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -10.259142264 + 0.5 x = -10.259142264 + 0.5 Combine like terms: -10.259142264 + 0.5 = -9.759142264 x = -9.759142264 Simplifying x = -9.759142264

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.759142264, -9.759142264}

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