4y^2+9y-6=0

Simple and best practice solution for 4y^2+9y-6=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 4y^2+9y-6=0 equation:


Simplifying
4y2 + 9y + -6 = 0

Reorder the terms:
-6 + 9y + 4y2 = 0

Solving
-6 + 9y + 4y2 = 0

Solving for variable 'y'.

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

Divide each side by '4'.
-1.5 + 2.25y + y2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + 2.25y + 1.5 + y2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + 2.25y + y2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + 2.25y + y2 = 0 + 1.5
2.25y + y2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
2.25y + y2 = 1.5

The y term is 2.25y.  Take half its coefficient (1.125).
Square it (1.265625) and add it to both sides.

Add '1.265625' to each side of the equation.
2.25y + 1.265625 + y2 = 1.5 + 1.265625

Reorder the terms:
1.265625 + 2.25y + y2 = 1.5 + 1.265625

Combine like terms: 1.5 + 1.265625 = 2.765625
1.265625 + 2.25y + y2 = 2.765625

Factor a perfect square on the left side:
(y + 1.125)(y + 1.125) = 2.765625

Calculate the square root of the right side: 1.663016837

Break this problem into two subproblems by setting 
(y + 1.125) equal to 1.663016837 and -1.663016837.

Subproblem 1

y + 1.125 = 1.663016837 Simplifying y + 1.125 = 1.663016837 Reorder the terms: 1.125 + y = 1.663016837 Solving 1.125 + y = 1.663016837 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-1.125' to each side of the equation. 1.125 + -1.125 + y = 1.663016837 + -1.125 Combine like terms: 1.125 + -1.125 = 0.000 0.000 + y = 1.663016837 + -1.125 y = 1.663016837 + -1.125 Combine like terms: 1.663016837 + -1.125 = 0.538016837 y = 0.538016837 Simplifying y = 0.538016837

Subproblem 2

y + 1.125 = -1.663016837 Simplifying y + 1.125 = -1.663016837 Reorder the terms: 1.125 + y = -1.663016837 Solving 1.125 + y = -1.663016837 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-1.125' to each side of the equation. 1.125 + -1.125 + y = -1.663016837 + -1.125 Combine like terms: 1.125 + -1.125 = 0.000 0.000 + y = -1.663016837 + -1.125 y = -1.663016837 + -1.125 Combine like terms: -1.663016837 + -1.125 = -2.788016837 y = -2.788016837 Simplifying y = -2.788016837

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.538016837, -2.788016837}

See similar equations:

| 2(2x-y)=2(-4) | | 4(x-3)=7(x+12) | | 8x+24=46 | | x^2+13/9x=4/9x | | 3x^2+20x-7=11+10(2x+3) | | 5-2x=23 | | -1/15g=18 | | s=y-0.2t | | 6z+3z=8z | | 8/9=x-1/3(7) | | 3x-(-2x+6)=3x+5-2x+1 | | 3x^2+14x+15=7 | | 3x-9y+2x-(-7y)+1x= | | .75x-6.5=-.5-.25 | | -14z+16z=-4 | | (2x-1)/6+(x+3)=5/2 | | 5x+5=6x-2x | | 4*3*3+8*(-4)*3-13*(-4)+5= | | z^2-2z-99=0 | | 2x-8=2(x-6) | | -4x+3=4x-77 | | 2(x-8)-2=2x-18 | | x+6x+1=15 | | y=13/3-5/3(-4) | | 6/5+1/2 | | y-13=-60(x-(-3)) | | y=13/3-5/3(-5) | | xz=3y+3z | | 3(n)+2(n)+1=-4 | | -6(x-5)=-42 | | 4(y-5)=0 | | 7(x-5)=35 |

Equations solver categories