0=-8x^2+4x+3

Simple and best practice solution for 0=-8x^2+4x+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 0=-8x^2+4x+3 equation:


Simplifying
0 = -8x2 + 4x + 3

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

Solving
0 = 3 + 4x + -8x2

Solving for variable 'x'.

Combine like terms: 0 + -3 = -3
-3 + -4x + 8x2 = 3 + 4x + -8x2 + -3 + -4x + 8x2

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

Combine like terms: 3 + -3 = 0
-3 + -4x + 8x2 = 0 + 4x + -4x + -8x2 + 8x2
-3 + -4x + 8x2 = 4x + -4x + -8x2 + 8x2

Combine like terms: 4x + -4x = 0
-3 + -4x + 8x2 = 0 + -8x2 + 8x2
-3 + -4x + 8x2 = -8x2 + 8x2

Combine like terms: -8x2 + 8x2 = 0
-3 + -4x + 8x2 = 0

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:

| n/4=110/8 | | 2a-5a+6a= | | 7.15/20-16/20 | | 0=-8x^2+5x+9 | | B/-2a8=-6 | | 715/20-16/20 | | 8(x+3)+3x+6=6x+7 | | 8(x+2)+4x+6=6x+7 | | 3.5(1)-2.3y=-8.2 | | -8x(x+2)+4x+6=6x+7 | | -2.3y=-8.2 | | 2(x-7)-8=-3(-8x+4)-4x | | (15)(11)(x)=1237.5 | | -3(x+7)=0 | | -10(1)-6y=-29 | | -10x-6(1)=-29 | | -3(4x-1)+x=-3(x+1) | | -10(0)-6y=-29 | | y=(5x^2+4)(4)+(4x-5)(10x) | | 4y+1/8=5y+7/8 | | -6y/6=-29/-6 | | 0.60x+0.05(120)=0.30(96) | | 3/4v+1=-1/3v-2/3 | | y=(5x^2+4)(4x-5) | | -(-6+6)=x | | -2/3x+7/2=-7x-3/4 | | -2/3x+7/12=-7x-3/4 | | 0=-7x^2+2x+4 | | 1993+43x=3200 | | y=5/6x+(-51) | | y-5/3=-7/3y+3/4 | | 5c^2+2=17c |

Equations solver categories