(x-4.5)(x+3.3)=0

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Solution for (x-4.5)(x+3.3)=0 equation:


Simplifying
(x + -4.5)(x + 3.3) = 0

Reorder the terms:
(-4.5 + x)(x + 3.3) = 0

Reorder the terms:
(-4.5 + x)(3.3 + x) = 0

Multiply (-4.5 + x) * (3.3 + x)
(-4.5(3.3 + x) + x(3.3 + x)) = 0
((3.3 * -4.5 + x * -4.5) + x(3.3 + x)) = 0
((-14.85 + -4.5x) + x(3.3 + x)) = 0
(-14.85 + -4.5x + (3.3 * x + x * x)) = 0
(-14.85 + -4.5x + (3.3x + x2)) = 0

Combine like terms: -4.5x + 3.3x = -1.2x
(-14.85 + -1.2x + x2) = 0

Solving
-14.85 + -1.2x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '14.85' to each side of the equation.
-14.85 + -1.2x + 14.85 + x2 = 0 + 14.85

Reorder the terms:
-14.85 + 14.85 + -1.2x + x2 = 0 + 14.85

Combine like terms: -14.85 + 14.85 = 0.00
0.00 + -1.2x + x2 = 0 + 14.85
-1.2x + x2 = 0 + 14.85

Combine like terms: 0 + 14.85 = 14.85
-1.2x + x2 = 14.85

The x term is -1.2x.  Take half its coefficient (-0.6).
Square it (0.36) and add it to both sides.

Add '0.36' to each side of the equation.
-1.2x + 0.36 + x2 = 14.85 + 0.36

Reorder the terms:
0.36 + -1.2x + x2 = 14.85 + 0.36

Combine like terms: 14.85 + 0.36 = 15.21
0.36 + -1.2x + x2 = 15.21

Factor a perfect square on the left side:
(x + -0.6)(x + -0.6) = 15.21

Calculate the square root of the right side: 3.9

Break this problem into two subproblems by setting 
(x + -0.6) equal to 3.9 and -3.9.

Subproblem 1

x + -0.6 = 3.9 Simplifying x + -0.6 = 3.9 Reorder the terms: -0.6 + x = 3.9 Solving -0.6 + x = 3.9 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6' to each side of the equation. -0.6 + 0.6 + x = 3.9 + 0.6 Combine like terms: -0.6 + 0.6 = 0.0 0.0 + x = 3.9 + 0.6 x = 3.9 + 0.6 Combine like terms: 3.9 + 0.6 = 4.5 x = 4.5 Simplifying x = 4.5

Subproblem 2

x + -0.6 = -3.9 Simplifying x + -0.6 = -3.9 Reorder the terms: -0.6 + x = -3.9 Solving -0.6 + x = -3.9 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6' to each side of the equation. -0.6 + 0.6 + x = -3.9 + 0.6 Combine like terms: -0.6 + 0.6 = 0.0 0.0 + x = -3.9 + 0.6 x = -3.9 + 0.6 Combine like terms: -3.9 + 0.6 = -3.3 x = -3.3 Simplifying x = -3.3

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.5, -3.3}

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