13x^2+8x-22=0

Simple and best practice solution for 13x^2+8x-22=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 13x^2+8x-22=0 equation:


Simplifying
13x2 + 8x + -22 = 0

Reorder the terms:
-22 + 8x + 13x2 = 0

Solving
-22 + 8x + 13x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
13 the coefficient of the squared term: 

Divide each side by '13'.
-1.692307692 + 0.6153846154x + x2 = 0

Move the constant term to the right:

Add '1.692307692' to each side of the equation.
-1.692307692 + 0.6153846154x + 1.692307692 + x2 = 0 + 1.692307692

Reorder the terms:
-1.692307692 + 1.692307692 + 0.6153846154x + x2 = 0 + 1.692307692

Combine like terms: -1.692307692 + 1.692307692 = 0.000000000
0.000000000 + 0.6153846154x + x2 = 0 + 1.692307692
0.6153846154x + x2 = 0 + 1.692307692

Combine like terms: 0 + 1.692307692 = 1.692307692
0.6153846154x + x2 = 1.692307692

The x term is 0.6153846154x.  Take half its coefficient (0.3076923077).
Square it (0.09467455622) and add it to both sides.

Add '0.09467455622' to each side of the equation.
0.6153846154x + 0.09467455622 + x2 = 1.692307692 + 0.09467455622

Reorder the terms:
0.09467455622 + 0.6153846154x + x2 = 1.692307692 + 0.09467455622

Combine like terms: 1.692307692 + 0.09467455622 = 1.78698224822
0.09467455622 + 0.6153846154x + x2 = 1.78698224822

Factor a perfect square on the left side:
(x + 0.3076923077)(x + 0.3076923077) = 1.78698224822

Calculate the square root of the right side: 1.336780554

Break this problem into two subproblems by setting 
(x + 0.3076923077) equal to 1.336780554 and -1.336780554.

Subproblem 1

x + 0.3076923077 = 1.336780554 Simplifying x + 0.3076923077 = 1.336780554 Reorder the terms: 0.3076923077 + x = 1.336780554 Solving 0.3076923077 + x = 1.336780554 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3076923077' to each side of the equation. 0.3076923077 + -0.3076923077 + x = 1.336780554 + -0.3076923077 Combine like terms: 0.3076923077 + -0.3076923077 = 0.0000000000 0.0000000000 + x = 1.336780554 + -0.3076923077 x = 1.336780554 + -0.3076923077 Combine like terms: 1.336780554 + -0.3076923077 = 1.0290882463 x = 1.0290882463 Simplifying x = 1.0290882463

Subproblem 2

x + 0.3076923077 = -1.336780554 Simplifying x + 0.3076923077 = -1.336780554 Reorder the terms: 0.3076923077 + x = -1.336780554 Solving 0.3076923077 + x = -1.336780554 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3076923077' to each side of the equation. 0.3076923077 + -0.3076923077 + x = -1.336780554 + -0.3076923077 Combine like terms: 0.3076923077 + -0.3076923077 = 0.0000000000 0.0000000000 + x = -1.336780554 + -0.3076923077 x = -1.336780554 + -0.3076923077 Combine like terms: -1.336780554 + -0.3076923077 = -1.6444728617 x = -1.6444728617 Simplifying x = -1.6444728617

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.0290882463, -1.6444728617}

See similar equations:

| 6+25x=20x+10 | | 5x+2(x+5)=52 | | f(x)=0.7 | | 4+7x=16+x | | (5x)(6y)= | | 6x-3=16x-38 | | 2ln(x+5)=4 | | 100+0.5*(Y-200)+250+200+150= | | 8X+13=-15 | | 2=x-3x+35 | | y=92+-13x | | 5(5p-3)= | | y-1=-13(x-7) | | x^2=13x+30 | | (2x+2y+1)dy+(x+y+1)dx=0 | | M+(m+2)=15 | | 6xy+2y+2=20 | | y=2*t+0.3*sin(2*pi*t) | | 5000m= | | x+2(x-6)+2x+1=124 | | 2x-10+2x-50+2x=180 | | 36+12x=84+6x | | 5x-10=x-18 | | 18y+30=x | | 9x-10=38+3x | | 5x+5=x+33 | | 3x-6=-20 | | 27x+y=5 | | -9=4.9+k | | 2x+2=-3-2 | | x+4.7=5.8 | | 2x-10y=150 |

Equations solver categories