y^2+6y-11=0

Simple and best practice solution for y^2+6y-11=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 y^2+6y-11=0 equation:


Simplifying
y2 + 6y + -11 = 0

Reorder the terms:
-11 + 6y + y2 = 0

Solving
-11 + 6y + y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '11' to each side of the equation.
-11 + 6y + 11 + y2 = 0 + 11

Reorder the terms:
-11 + 11 + 6y + y2 = 0 + 11

Combine like terms: -11 + 11 = 0
0 + 6y + y2 = 0 + 11
6y + y2 = 0 + 11

Combine like terms: 0 + 11 = 11
6y + y2 = 11

The y term is 6y.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6y + 9 + y2 = 11 + 9

Reorder the terms:
9 + 6y + y2 = 11 + 9

Combine like terms: 11 + 9 = 20
9 + 6y + y2 = 20

Factor a perfect square on the left side:
(y + 3)(y + 3) = 20

Calculate the square root of the right side: 4.472135955

Break this problem into two subproblems by setting 
(y + 3) equal to 4.472135955 and -4.472135955.

Subproblem 1

y + 3 = 4.472135955 Simplifying y + 3 = 4.472135955 Reorder the terms: 3 + y = 4.472135955 Solving 3 + y = 4.472135955 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + y = 4.472135955 + -3 Combine like terms: 3 + -3 = 0 0 + y = 4.472135955 + -3 y = 4.472135955 + -3 Combine like terms: 4.472135955 + -3 = 1.472135955 y = 1.472135955 Simplifying y = 1.472135955

Subproblem 2

y + 3 = -4.472135955 Simplifying y + 3 = -4.472135955 Reorder the terms: 3 + y = -4.472135955 Solving 3 + y = -4.472135955 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + y = -4.472135955 + -3 Combine like terms: 3 + -3 = 0 0 + y = -4.472135955 + -3 y = -4.472135955 + -3 Combine like terms: -4.472135955 + -3 = -7.472135955 y = -7.472135955 Simplifying y = -7.472135955

Solution

The solution to the problem is based on the solutions from the subproblems. y = {1.472135955, -7.472135955}

See similar equations:

| 5d+10n=320 | | (u-3)(u+3)= | | 10t+5t^2=0 | | 0.95x+.05(4-x)=.10(128) | | 4x-15=0 | | -x-7(x-2)-2(-3x+2)=4 | | 2y(y+6)=10 | | -3x-3-2(-3x+4)=-3+5x | | 5a+2a+69=100 | | 5a+2a=10 | | -5x+2(13+5x)-(12+6x)=4 | | 3(x-5)+4(3-x)=-7 | | 6(2)-2= | | 2(2)+8= | | -29-x=-3+3(-4-2x)+6x | | 15-14i+12x=-9+10i+3yi | | 16+2x=-2+3x | | 2x^2-20x+46=0 | | 2(3x-2x+7)=30 | | 4m^2+7m-2=0 | | 2b^2-2b=12 | | 8x+12y=36 | | -2X+6=X^2+9 | | 9x+4=x+4 | | 12x+7x=140-x | | -3-3= | | tn=5n+1 | | 25=-2.2+(n-1)*1.6 | | 6z-z=35 | | 3x+31=11x+65 | | -9D=-180 | | 3(3-1)-63+4= |

Equations solver categories