x^2-19x+28=0

Simple and best practice solution for x^2-19x+28=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for x^2-19x+28=0 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 = 17.389866919 x = 17.389866919 Simplifying x = 17.389866919

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 = 1.610133081 x = 1.610133081 Simplifying x = 1.610133081

Solution

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

See similar equations:

| 16y^3-16y=0 | | 11x-222=2x-6 | | 89=-x-7x-7 | | 3/2(2n-3)=(2n-3) | | 8x-14=3x+17 | | ln(2x-1)-ln(3)=ln(9) | | 16=x-4x-8 | | 24-9x=11x+4 | | 7+4x-5x=11 | | 5x+11+4x-17-16x+8x+31=34+-2x | | x^3-15x+3=0 | | x/1.6=13 | | x+6/3=x+134x11 | | -5x+6+x=-22 | | ln(x+3)+ln(x)=ln(x+24) | | 5x+11+4x+-17-16x+8x+31=34+-2x | | 5x+7+x=37 | | 20=40-4j | | 1/x-1+5=26/x-1 | | ln(x+3)-ln(x)=ln(x+24) | | 5-10x=105-38x | | 1/x-1+26/x-1 | | 5c+11+4x-17-16x+8+31=34-2x | | M-12=m/5 | | 23=x+2x+2 | | 13-5x=23 | | 7+x/2=22 | | 50=4x+6x-10 | | (x+44)(3x-2)=0 | | 5(a+3)=2(a-2) | | 15=-3x+2x+6 | | 5+2x-3x=-6 |

Equations solver categories