-8x^2+6x+3=

Simple and best practice solution for -8x^2+6x+3= 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+6x+3= equation:


Simplifying
-8x2 + 6x + 3 = 0

Reorder the terms:
3 + 6x + -8x2 = 0

Solving
3 + 6x + -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 + -0.75x + x2 = 0

Move the constant term to the right:

Add '0.375' to each side of the equation.
-0.375 + -0.75x + 0.375 + x2 = 0 + 0.375

Reorder the terms:
-0.375 + 0.375 + -0.75x + x2 = 0 + 0.375

Combine like terms: -0.375 + 0.375 = 0.000
0.000 + -0.75x + x2 = 0 + 0.375
-0.75x + x2 = 0 + 0.375

Combine like terms: 0 + 0.375 = 0.375
-0.75x + x2 = 0.375

The x term is -0.75x.  Take half its coefficient (-0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
-0.75x + 0.140625 + x2 = 0.375 + 0.140625

Reorder the terms:
0.140625 + -0.75x + x2 = 0.375 + 0.140625

Combine like terms: 0.375 + 0.140625 = 0.515625
0.140625 + -0.75x + x2 = 0.515625

Factor a perfect square on the left side:
(x + -0.375)(x + -0.375) = 0.515625

Calculate the square root of the right side: 0.718070331

Break this problem into two subproblems by setting 
(x + -0.375) equal to 0.718070331 and -0.718070331.

Subproblem 1

x + -0.375 = 0.718070331 Simplifying x + -0.375 = 0.718070331 Reorder the terms: -0.375 + x = 0.718070331 Solving -0.375 + x = 0.718070331 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + x = 0.718070331 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x = 0.718070331 + 0.375 x = 0.718070331 + 0.375 Combine like terms: 0.718070331 + 0.375 = 1.093070331 x = 1.093070331 Simplifying x = 1.093070331

Subproblem 2

x + -0.375 = -0.718070331 Simplifying x + -0.375 = -0.718070331 Reorder the terms: -0.375 + x = -0.718070331 Solving -0.375 + x = -0.718070331 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + x = -0.718070331 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x = -0.718070331 + 0.375 x = -0.718070331 + 0.375 Combine like terms: -0.718070331 + 0.375 = -0.343070331 x = -0.343070331 Simplifying x = -0.343070331

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.093070331, -0.343070331}

See similar equations:

| 226+200x=104 | | 4x-7x+6x-5x= | | -7(-7)+9y=-63 | | 4/x=104 | | 5x/31=7x+7 | | 327x+128(11325-403x/132)=10025 | | x-3=-3x+9 | | 18.10*p=17.6 | | -7*7+9y=-63 | | 18x-2c=-7 | | 4.5x+2.4=x+6.2 | | 16x^2+9x^2=7225 | | 2x-5(x+5)=3x-7 | | x+.25=.33 | | -7(x+3)+3x+6=8x+10 | | x^4+2x^3-7x^2+2x-8=0 | | 3x^2-x-88=0 | | 9x+7-6(x+1)=6x+3 | | -1/2+5 | | 16x+9x=9.22 | | 3+28x+16= | | 0.04x^2-9x-6000=0 | | 36*y=14.76 | | y^2+4y-357=0 | | (3x-3)(3x-3)= | | -5x^2+9x+3= | | 7340/x=333.64 | | 14.00*p=35.00 | | 3r+3=9 | | x^(2/3)-4x^(1/3)-5=0 | | 14.00*p=105 | | 10+20/5 |

Equations solver categories