8x^2+29x-11=0

Simple and best practice solution for 8x^2+29x-11=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 8x^2+29x-11=0 equation:


Simplifying
8x2 + 29x + -11 = 0

Reorder the terms:
-11 + 29x + 8x2 = 0

Solving
-11 + 29x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
-1.375 + 3.625x + x2 = 0

Move the constant term to the right:

Add '1.375' to each side of the equation.
-1.375 + 3.625x + 1.375 + x2 = 0 + 1.375

Reorder the terms:
-1.375 + 1.375 + 3.625x + x2 = 0 + 1.375

Combine like terms: -1.375 + 1.375 = 0.000
0.000 + 3.625x + x2 = 0 + 1.375
3.625x + x2 = 0 + 1.375

Combine like terms: 0 + 1.375 = 1.375
3.625x + x2 = 1.375

The x term is 3.625x.  Take half its coefficient (1.8125).
Square it (3.28515625) and add it to both sides.

Add '3.28515625' to each side of the equation.
3.625x + 3.28515625 + x2 = 1.375 + 3.28515625

Reorder the terms:
3.28515625 + 3.625x + x2 = 1.375 + 3.28515625

Combine like terms: 1.375 + 3.28515625 = 4.66015625
3.28515625 + 3.625x + x2 = 4.66015625

Factor a perfect square on the left side:
(x + 1.8125)(x + 1.8125) = 4.66015625

Calculate the square root of the right side: 2.158739505

Break this problem into two subproblems by setting 
(x + 1.8125) equal to 2.158739505 and -2.158739505.

Subproblem 1

x + 1.8125 = 2.158739505 Simplifying x + 1.8125 = 2.158739505 Reorder the terms: 1.8125 + x = 2.158739505 Solving 1.8125 + x = 2.158739505 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.8125' to each side of the equation. 1.8125 + -1.8125 + x = 2.158739505 + -1.8125 Combine like terms: 1.8125 + -1.8125 = 0.0000 0.0000 + x = 2.158739505 + -1.8125 x = 2.158739505 + -1.8125 Combine like terms: 2.158739505 + -1.8125 = 0.346239505 x = 0.346239505 Simplifying x = 0.346239505

Subproblem 2

x + 1.8125 = -2.158739505 Simplifying x + 1.8125 = -2.158739505 Reorder the terms: 1.8125 + x = -2.158739505 Solving 1.8125 + x = -2.158739505 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.8125' to each side of the equation. 1.8125 + -1.8125 + x = -2.158739505 + -1.8125 Combine like terms: 1.8125 + -1.8125 = 0.0000 0.0000 + x = -2.158739505 + -1.8125 x = -2.158739505 + -1.8125 Combine like terms: -2.158739505 + -1.8125 = -3.971239505 x = -3.971239505 Simplifying x = -3.971239505

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.346239505, -3.971239505}

See similar equations:

| X-y=32 | | ln(2)+ln(x-2)=ln(17) | | N-n-90=1/3 | | -6u^3(3u-2)(6u+7)= | | 9a+2=6a+3(a-5) | | -10b=0 | | 8p+19=15 | | 18p+19=15 | | 9=p/5 | | (X-3)/3-1=(x-8)/4 | | 16x+9y=40 | | 3/2r-4=1/2r | | N+3n=5n-2 | | f(22)=2x-5 | | 2(3x-1)=46 | | 57=-3 | | -(7xy-9)+3(4xy+6)= | | 6z-12z=36 | | 10(x+3)=14(x+1) | | 4/(-2-2i) | | y+24=21 | | 3x=14x+130 | | 7x^2+14x-3=0 | | 12x+36y=200000 | | 5.7q-4.7-5.4=-0.7q-3.2 | | y=2x^2-3x+8 | | 4x=9p-98 | | 5a+13=(7a+6)5 | | 453-3/7 | | N+3n+2=5n-2 | | 4+2(z-2)=-5z+5 | | 3(x+2)+17= |

Equations solver categories