x^2+19x-8=0

Simple and best practice solution for x^2+19x-8=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-8=0 equation:


Simplifying
x2 + 19x + -8 = 0

Reorder the terms:
-8 + 19x + x2 = 0

Solving
-8 + 19x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '8' to each side of the equation.
-8 + 19x + 8 + x2 = 0 + 8

Reorder the terms:
-8 + 8 + 19x + x2 = 0 + 8

Combine like terms: -8 + 8 = 0
0 + 19x + x2 = 0 + 8
19x + x2 = 0 + 8

Combine like terms: 0 + 8 = 8
19x + x2 = 8

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 = 8 + 90.25

Reorder the terms:
90.25 + 19x + x2 = 8 + 90.25

Combine like terms: 8 + 90.25 = 98.25
90.25 + 19x + x2 = 98.25

Factor a perfect square on the left side:
(x + 9.5)(x + 9.5) = 98.25

Calculate the square root of the right side: 9.912113801

Break this problem into two subproblems by setting 
(x + 9.5) equal to 9.912113801 and -9.912113801.

Subproblem 1

x + 9.5 = 9.912113801 Simplifying x + 9.5 = 9.912113801 Reorder the terms: 9.5 + x = 9.912113801 Solving 9.5 + x = 9.912113801 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 = 9.912113801 + -9.5 Combine like terms: 9.5 + -9.5 = 0.0 0.0 + x = 9.912113801 + -9.5 x = 9.912113801 + -9.5 Combine like terms: 9.912113801 + -9.5 = 0.412113801 x = 0.412113801 Simplifying x = 0.412113801

Subproblem 2

x + 9.5 = -9.912113801 Simplifying x + 9.5 = -9.912113801 Reorder the terms: 9.5 + x = -9.912113801 Solving 9.5 + x = -9.912113801 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 = -9.912113801 + -9.5 Combine like terms: 9.5 + -9.5 = 0.0 0.0 + x = -9.912113801 + -9.5 x = -9.912113801 + -9.5 Combine like terms: -9.912113801 + -9.5 = -19.412113801 x = -19.412113801 Simplifying x = -19.412113801

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.412113801, -19.412113801}

See similar equations:

| (x-22)135=180 | | 63+4y-28=16y-14-5y | | x^4+x^3-10x^2+5x+25=0 | | y=0.5-100x | | n=9+m | | 513.00-222.38= | | 4=76-6y | | 2x+3(3x+5)=29 | | (2x+13)47=90 | | x^2-22x=57 | | x^2-22=57 | | 5x^2-55=70 | | x^3=42.875 | | 2x+b=c+2 | | 2/5*3/10 | | 2c+1=-8 | | 1=2y-5y | | 5h-12=18 | | 57.9=17-1y | | 7m-12=2 | | 9m+9=18 | | 9b-2=-48 | | =7*6-3+1 | | 2x+2b=3-4c+x | | 5.5n=-33 | | 3x-12+5(x-1)=8x+-17 | | 32f=192 | | V=30000*0.85x | | 2c+1=19 | | 45t+60(t-1)=250 | | -8w+5(w-4)=-38 | | z+2x=180 |

Equations solver categories