8x(x)-4x-3=0

Simple and best practice solution for 8x(x)-4x-3=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(x)-4x-3=0 equation:


Simplifying
8x(x) + -4x + -3 = 0

Multiply x * x
8x2 + -4x + -3 = 0

Reorder the terms:
-3 + -4x + 8x2 = 0

Solving
-3 + -4x + 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'.
-0.375 + -0.5x + x2 = 0

Move the constant term to the right:

Add '0.375' to each side of the equation.
-0.375 + -0.5x + 0.375 + x2 = 0 + 0.375

Reorder the terms:
-0.375 + 0.375 + -0.5x + x2 = 0 + 0.375

Combine like terms: -0.375 + 0.375 = 0.000
0.000 + -0.5x + x2 = 0 + 0.375
-0.5x + x2 = 0 + 0.375

Combine like terms: 0 + 0.375 = 0.375
-0.5x + x2 = 0.375

The x term is -0.5x.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5x + 0.0625 + x2 = 0.375 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = 0.375 + 0.0625

Combine like terms: 0.375 + 0.0625 = 0.4375
0.0625 + -0.5x + x2 = 0.4375

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = 0.4375

Calculate the square root of the right side: 0.661437828

Break this problem into two subproblems by setting 
(x + -0.25) equal to 0.661437828 and -0.661437828.

Subproblem 1

x + -0.25 = 0.661437828 Simplifying x + -0.25 = 0.661437828 Reorder the terms: -0.25 + x = 0.661437828 Solving -0.25 + x = 0.661437828 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = 0.661437828 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 0.661437828 + 0.25 x = 0.661437828 + 0.25 Combine like terms: 0.661437828 + 0.25 = 0.911437828 x = 0.911437828 Simplifying x = 0.911437828

Subproblem 2

x + -0.25 = -0.661437828 Simplifying x + -0.25 = -0.661437828 Reorder the terms: -0.25 + x = -0.661437828 Solving -0.25 + x = -0.661437828 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = -0.661437828 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -0.661437828 + 0.25 x = -0.661437828 + 0.25 Combine like terms: -0.661437828 + 0.25 = -0.411437828 x = -0.411437828 Simplifying x = -0.411437828

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.911437828, -0.411437828}

See similar equations:

| -8sqrt+5x-5=-3 | | (7x+6)(-8+5)= | | 3(3x-20)=81 | | 81y^2+72y+16= | | 8x+8=6x+30 | | 5/6÷9 | | 8y+3=7y-8 | | x^3+6x^2-5x+3= | | 2x-6=10x+3 | | 6t^4-20t^3+16t^2= | | (8x^-2y^5)/(9x^2y)*((3x^5y^-3)/(4x^-2y)) | | -6m^2q-5mq+25q= | | 8a-66=2a | | 64x^2-48x+5= | | -y+19=286 | | 121=164-v | | 10x+9=3x+300 | | 2x*3=15x+5 | | 30y^3-6y^2= | | 6x+15=60-3x | | 9×t×u×1/3= | | 6x+15=60+3x | | 5y+8=53 | | 7z+2=8+2z+1 | | -2+2x=-3+16x | | 4bc^2-4cb^2= | | 1.414213562x^2-x+1.414213562=0 | | -2x+16+6y=44 | | Y=15-1.25x | | S^2-t^2/(t-s)^2 | | -1.2815516=(x-15)/2 | | 8/x=11 |

Equations solver categories