8x^2-5x-24=0

Simple and best practice solution for 8x^2-5x-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^2-5x-24=0 equation:


Simplifying
8x2 + -5x + -24 = 0

Reorder the terms:
-24 + -5x + 8x2 = 0

Solving
-24 + -5x + 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 + -0.625x + x2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -0.625x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + -0.625x + x2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -0.625x + x2 = 0 + 3
-0.625x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
-0.625x + x2 = 3

The x term is -0.625x.  Take half its coefficient (-0.3125).
Square it (0.09765625) and add it to both sides.

Add '0.09765625' to each side of the equation.
-0.625x + 0.09765625 + x2 = 3 + 0.09765625

Reorder the terms:
0.09765625 + -0.625x + x2 = 3 + 0.09765625

Combine like terms: 3 + 0.09765625 = 3.09765625
0.09765625 + -0.625x + x2 = 3.09765625

Factor a perfect square on the left side:
(x + -0.3125)(x + -0.3125) = 3.09765625

Calculate the square root of the right side: 1.76001598

Break this problem into two subproblems by setting 
(x + -0.3125) equal to 1.76001598 and -1.76001598.

Subproblem 1

x + -0.3125 = 1.76001598 Simplifying x + -0.3125 = 1.76001598 Reorder the terms: -0.3125 + x = 1.76001598 Solving -0.3125 + x = 1.76001598 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3125' to each side of the equation. -0.3125 + 0.3125 + x = 1.76001598 + 0.3125 Combine like terms: -0.3125 + 0.3125 = 0.0000 0.0000 + x = 1.76001598 + 0.3125 x = 1.76001598 + 0.3125 Combine like terms: 1.76001598 + 0.3125 = 2.07251598 x = 2.07251598 Simplifying x = 2.07251598

Subproblem 2

x + -0.3125 = -1.76001598 Simplifying x + -0.3125 = -1.76001598 Reorder the terms: -0.3125 + x = -1.76001598 Solving -0.3125 + x = -1.76001598 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3125' to each side of the equation. -0.3125 + 0.3125 + x = -1.76001598 + 0.3125 Combine like terms: -0.3125 + 0.3125 = 0.0000 0.0000 + x = -1.76001598 + 0.3125 x = -1.76001598 + 0.3125 Combine like terms: -1.76001598 + 0.3125 = -1.44751598 x = -1.44751598 Simplifying x = -1.44751598

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.07251598, -1.44751598}

See similar equations:

| 16x^4-8x^2=-1 | | 18y-123+2y=16y-120 | | u^3-14u^2-32u=0 | | s^2-56s-s^3=0 | | 5n^2-8+5=0 | | 12y-24+14=6y-90 | | x/2-5=9 | | 19=5w | | (y/5)-(1/1)=(y/3)-(3/5) | | 8x-(7x+4)=2x-40 | | 012(y-2)+0.14=0.06-0.03(30) | | (8a^2-22a-21)/(4a+3) | | 4/(x+1)-1/x=1 | | 10+9=5w | | x=log(x+57) | | 676-474= | | 676-404= | | 13.7x+16.3y=147.4 | | x/15=450 | | 305+169= | | 32x^3-12x^2-12x+5=0 | | x+9=y^2 | | 2-5=-7 | | 2(169)-33= | | 5x+3(x+7)=-15 | | 169.75+202.75+306.75= | | -60=-17/2(x-20) | | x^3-14x-12=0 | | 2(169.75)-33= | | 3.9=1.3y | | 3/5x+9/5=7/5x | | 2(170)-33= |

Equations solver categories