8x^2-11x-24=0

Simple and best practice solution for 8x^2-11x-24=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^2-11x-24=0 equation:


Simplifying
8x2 + -11x + -24 = 0

Reorder the terms:
-24 + -11x + 8x2 = 0

Solving
-24 + -11x + 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'.
-3 + -1.375x + x2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -1.375x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + -1.375x + x2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -1.375x + x2 = 0 + 3
-1.375x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
-1.375x + x2 = 3

The x term is -1.375x.  Take half its coefficient (-0.6875).
Square it (0.47265625) and add it to both sides.

Add '0.47265625' to each side of the equation.
-1.375x + 0.47265625 + x2 = 3 + 0.47265625

Reorder the terms:
0.47265625 + -1.375x + x2 = 3 + 0.47265625

Combine like terms: 3 + 0.47265625 = 3.47265625
0.47265625 + -1.375x + x2 = 3.47265625

Factor a perfect square on the left side:
(x + -0.6875)(x + -0.6875) = 3.47265625

Calculate the square root of the right side: 1.863506439

Break this problem into two subproblems by setting 
(x + -0.6875) equal to 1.863506439 and -1.863506439.

Subproblem 1

x + -0.6875 = 1.863506439 Simplifying x + -0.6875 = 1.863506439 Reorder the terms: -0.6875 + x = 1.863506439 Solving -0.6875 + x = 1.863506439 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6875' to each side of the equation. -0.6875 + 0.6875 + x = 1.863506439 + 0.6875 Combine like terms: -0.6875 + 0.6875 = 0.0000 0.0000 + x = 1.863506439 + 0.6875 x = 1.863506439 + 0.6875 Combine like terms: 1.863506439 + 0.6875 = 2.551006439 x = 2.551006439 Simplifying x = 2.551006439

Subproblem 2

x + -0.6875 = -1.863506439 Simplifying x + -0.6875 = -1.863506439 Reorder the terms: -0.6875 + x = -1.863506439 Solving -0.6875 + x = -1.863506439 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6875' to each side of the equation. -0.6875 + 0.6875 + x = -1.863506439 + 0.6875 Combine like terms: -0.6875 + 0.6875 = 0.0000 0.0000 + x = -1.863506439 + 0.6875 x = -1.863506439 + 0.6875 Combine like terms: -1.863506439 + 0.6875 = -1.176006439 x = -1.176006439 Simplifying x = -1.176006439

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.551006439, -1.176006439}

See similar equations:

| x(x-5)=1.403298351 | | 5x-6(2-x)=32 | | 1-3y/2 | | -5/9x5/2x6/7 | | 16+(-4)-7= | | 6(-2/3)-6 | | -4(7v+6)+4(v-1)=-4v+8v | | -2(a+8)=7(a+8) | | 84xa=270 | | -4n-(-2n-2)=-(n+2) | | 4*45/8-2*4 | | -4n-2(2n-2)=-(n+2) | | -4x-10y/2x+8x-11y/2x | | (-2/3)^3-3(-2/3)^2-105(-2/3) | | 6(x-2)+4=4(5x-2) | | 5k^2+27k+10=0 | | 4x-(x+6)=8x+6(2-x) | | 3(5x-2)/5x | | 2x-4+2(x-5)=2(x+3) | | 0.05(x-200)=240 | | 4x^2-2.2x+0.0024=0 | | 7y-4x-5=0 | | -6=-10w+9 | | 2w+4=2+6 | | (X^2+x-6)/(3x+3)*(x+1)/(x^2+2x-3) | | 3(2x-3)+2x=15 | | 5u^2=7u+6 | | 3v^2-3=240 | | (5x^6)(8)= | | 8-1x=-5 | | (5x^6)*(8)= | | (3/5)x+4=(1/5)x+5 |

Equations solver categories