2y^2-5y=11

Simple and best practice solution for 2y^2-5y=11 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 2y^2-5y=11 equation:


Simplifying
2y2 + -5y = 11

Reorder the terms:
-5y + 2y2 = 11

Solving
-5y + 2y2 = 11

Solving for variable 'y'.

Reorder the terms:
-11 + -5y + 2y2 = 11 + -11

Combine like terms: 11 + -11 = 0
-11 + -5y + 2y2 = 0

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

Divide each side by '2'.
-5.5 + -2.5y + y2 = 0

Move the constant term to the right:

Add '5.5' to each side of the equation.
-5.5 + -2.5y + 5.5 + y2 = 0 + 5.5

Reorder the terms:
-5.5 + 5.5 + -2.5y + y2 = 0 + 5.5

Combine like terms: -5.5 + 5.5 = 0.0
0.0 + -2.5y + y2 = 0 + 5.5
-2.5y + y2 = 0 + 5.5

Combine like terms: 0 + 5.5 = 5.5
-2.5y + y2 = 5.5

The y term is -2.5y.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5y + 1.5625 + y2 = 5.5 + 1.5625

Reorder the terms:
1.5625 + -2.5y + y2 = 5.5 + 1.5625

Combine like terms: 5.5 + 1.5625 = 7.0625
1.5625 + -2.5y + y2 = 7.0625

Factor a perfect square on the left side:
(y + -1.25)(y + -1.25) = 7.0625

Calculate the square root of the right side: 2.657536453

Break this problem into two subproblems by setting 
(y + -1.25) equal to 2.657536453 and -2.657536453.

Subproblem 1

y + -1.25 = 2.657536453 Simplifying y + -1.25 = 2.657536453 Reorder the terms: -1.25 + y = 2.657536453 Solving -1.25 + y = 2.657536453 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + y = 2.657536453 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + y = 2.657536453 + 1.25 y = 2.657536453 + 1.25 Combine like terms: 2.657536453 + 1.25 = 3.907536453 y = 3.907536453 Simplifying y = 3.907536453

Subproblem 2

y + -1.25 = -2.657536453 Simplifying y + -1.25 = -2.657536453 Reorder the terms: -1.25 + y = -2.657536453 Solving -1.25 + y = -2.657536453 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + y = -2.657536453 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + y = -2.657536453 + 1.25 y = -2.657536453 + 1.25 Combine like terms: -2.657536453 + 1.25 = -1.407536453 y = -1.407536453 Simplifying y = -1.407536453

Solution

The solution to the problem is based on the solutions from the subproblems. y = {3.907536453, -1.407536453}

See similar equations:

| X^2+9x-144=0 | | -2.67x^2+80.1x+0=0 | | (x+18)=12 | | 3x/6x^2 | | (3m)=39 | | 3(y)=12 | | 17b-5=420 | | 4(x^2-2)+3=11 | | 1/3(x+4)^2=12 | | x-9=-x+3 | | (x)=3-5x-2x | | 3(5x-4)=2(4x+6) | | 3x^2-8=22 | | 3/4+2/5 | | 128=-16t^2+112t | | 3(x+5m+4)= | | 3/x-3+3=15/x-3 | | 8x+11=5x+1 | | 1/3(x^3)-3/2(x^2)=0 | | 3x/9=15 | | 7.5(q+1.6)=29.25 | | 1/2+6=z-1 | | 6(41-21)-6(20-2)= | | 6y-2x+4=10y+6x-6 | | 1/3x^3-3/2x^2=0 | | 12m+4n-3m+8n= | | 1/3x^3-3/2x^2 | | 4x-5y+4=3y+2x+7 | | 22t+48=-28t | | 8x-1.2=-9+14.1 | | 5x^2+64=100 | | 10x+26=-64 |

Equations solver categories