x^2+19x+28=

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


Simplifying
x2 + 19x + 28 = 0

Reorder the terms:
28 + 19x + x2 = 0

Solving
28 + 19x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-28' to each side of the equation.
28 + 19x + -28 + x2 = 0 + -28

Reorder the terms:
28 + -28 + 19x + x2 = 0 + -28

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

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

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 = -28 + 90.25

Reorder the terms:
90.25 + 19x + x2 = -28 + 90.25

Combine like terms: -28 + 90.25 = 62.25
90.25 + 19x + x2 = 62.25

Factor a perfect square on the left side:
(x + 9.5)(x + 9.5) = 62.25

Calculate the square root of the right side: 7.889866919

Break this problem into two subproblems by setting 
(x + 9.5) equal to 7.889866919 and -7.889866919.

Subproblem 1

x + 9.5 = 7.889866919 Simplifying x + 9.5 = 7.889866919 Reorder the terms: 9.5 + x = 7.889866919 Solving 9.5 + x = 7.889866919 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 = 7.889866919 + -9.5 Combine like terms: 9.5 + -9.5 = 0.0 0.0 + x = 7.889866919 + -9.5 x = 7.889866919 + -9.5 Combine like terms: 7.889866919 + -9.5 = -1.610133081 x = -1.610133081 Simplifying x = -1.610133081

Subproblem 2

x + 9.5 = -7.889866919 Simplifying x + 9.5 = -7.889866919 Reorder the terms: 9.5 + x = -7.889866919 Solving 9.5 + x = -7.889866919 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 = -7.889866919 + -9.5 Combine like terms: 9.5 + -9.5 = 0.0 0.0 + x = -7.889866919 + -9.5 x = -7.889866919 + -9.5 Combine like terms: -7.889866919 + -9.5 = -17.389866919 x = -17.389866919 Simplifying x = -17.389866919

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.610133081, -17.389866919}

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