8y^2+6y-3=0

Simple and best practice solution for 8y^2+6y-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 8y^2+6y-3=0 equation:


Simplifying
8y2 + 6y + -3 = 0

Reorder the terms:
-3 + 6y + 8y2 = 0

Solving
-3 + 6y + 8y2 = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
8 the coefficient of the squared term: 

Divide each side by '8'.
-0.375 + 0.75y + y2 = 0

Move the constant term to the right:

Add '0.375' to each side of the equation.
-0.375 + 0.75y + 0.375 + y2 = 0 + 0.375

Reorder the terms:
-0.375 + 0.375 + 0.75y + y2 = 0 + 0.375

Combine like terms: -0.375 + 0.375 = 0.000
0.000 + 0.75y + y2 = 0 + 0.375
0.75y + y2 = 0 + 0.375

Combine like terms: 0 + 0.375 = 0.375
0.75y + y2 = 0.375

The y term is 0.75y.  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.
0.75y + 0.140625 + y2 = 0.375 + 0.140625

Reorder the terms:
0.140625 + 0.75y + y2 = 0.375 + 0.140625

Combine like terms: 0.375 + 0.140625 = 0.515625
0.140625 + 0.75y + y2 = 0.515625

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

Calculate the square root of the right side: 0.718070331

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

Subproblem 1

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

Subproblem 2

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

Solution

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

See similar equations:

| 6z^2+9z+2=0 | | 2sinx(sinx-1)=0 | | 40+.60=x | | 6x-6y=21 | | 11x-4=-3 | | 3x-15=x+19 | | (x+4)=2(x+5)+6 | | -5x+7x+8=20 | | x*x*x*x=x*x*x*x | | 5m+4=3m+10 | | 8-1.25(x-4)=0.15(x-1) | | 1.25(x-4)=0.15(x+1) | | 100x-15x=90000 | | 9x+5-5(x-2)=4x-10 | | 3xy/xy= | | 3xy/xy | | lg(x)=0.5x-1 | | 5a+4a=54 | | (3x-7)(3x-7)(3x-7)(3x-7)(3x-7)(3x-7)(3x-7)=y | | 2x-34=129 | | 4(7x/2)=92 | | f(x)=31.25 | | ((4*3)*22)/8 | | 0.35x+1.6=0.5 | | 1.5-2.5(-6x-4)=26.5 | | 4x-4(-x-3)=44 | | -3ab(7a-4b-7)= | | 6(1+2p)=30p | | x^2-30X+300=0 | | 12q-17=-19-2a | | 4x^2+y^2+20x=0 | | 3/2x=25 |

Equations solver categories