x^2+19x+73=28

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Solution for x^2+19x+73=28 equation:


Simplifying
x2 + 19x + 73 = 28

Reorder the terms:
73 + 19x + x2 = 28

Solving
73 + 19x + x2 = 28

Solving for variable 'x'.

Reorder the terms:
73 + -28 + 19x + x2 = 28 + -28

Combine like terms: 73 + -28 = 45
45 + 19x + x2 = 28 + -28

Combine like terms: 28 + -28 = 0
45 + 19x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-45' to each side of the equation.
45 + 19x + -45 + x2 = 0 + -45

Reorder the terms:
45 + -45 + 19x + x2 = 0 + -45

Combine like terms: 45 + -45 = 0
0 + 19x + x2 = 0 + -45
19x + x2 = 0 + -45

Combine like terms: 0 + -45 = -45
19x + x2 = -45

The x term is 19x.  Take half its coefficient (9.5).
Square it (90.25) and add it to both sides.

Add '90.25' to each side of the equation.
19x + 90.25 + x2 = -45 + 90.25

Reorder the terms:
90.25 + 19x + x2 = -45 + 90.25

Combine like terms: -45 + 90.25 = 45.25
90.25 + 19x + x2 = 45.25

Factor a perfect square on the left side:
(x + 9.5)(x + 9.5) = 45.25

Calculate the square root of the right side: 6.726812024

Break this problem into two subproblems by setting 
(x + 9.5) equal to 6.726812024 and -6.726812024.

Subproblem 1

x + 9.5 = 6.726812024 Simplifying x + 9.5 = 6.726812024 Reorder the terms: 9.5 + x = 6.726812024 Solving 9.5 + x = 6.726812024 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9.5' to each side of the equation. 9.5 + -9.5 + x = 6.726812024 + -9.5 Combine like terms: 9.5 + -9.5 = 0.0 0.0 + x = 6.726812024 + -9.5 x = 6.726812024 + -9.5 Combine like terms: 6.726812024 + -9.5 = -2.773187976 x = -2.773187976 Simplifying x = -2.773187976

Subproblem 2

x + 9.5 = -6.726812024 Simplifying x + 9.5 = -6.726812024 Reorder the terms: 9.5 + x = -6.726812024 Solving 9.5 + x = -6.726812024 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9.5' to each side of the equation. 9.5 + -9.5 + x = -6.726812024 + -9.5 Combine like terms: 9.5 + -9.5 = 0.0 0.0 + x = -6.726812024 + -9.5 x = -6.726812024 + -9.5 Combine like terms: -6.726812024 + -9.5 = -16.226812024 x = -16.226812024 Simplifying x = -16.226812024

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-2.773187976, -16.226812024}

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