-3y=2y+9-y^2

Simple and best practice solution for -3y=2y+9-y^2 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 -3y=2y+9-y^2 equation:


Simplifying
-3y = 2y + 9 + -1y2

Reorder the terms:
-3y = 9 + 2y + -1y2

Solving
-3y = 9 + 2y + -1y2

Solving for variable 'y'.

Reorder the terms:
-9 + -3y + -2y + y2 = 9 + 2y + -1y2 + -9 + -2y + y2

Combine like terms: -3y + -2y = -5y
-9 + -5y + y2 = 9 + 2y + -1y2 + -9 + -2y + y2

Reorder the terms:
-9 + -5y + y2 = 9 + -9 + 2y + -2y + -1y2 + y2

Combine like terms: 9 + -9 = 0
-9 + -5y + y2 = 0 + 2y + -2y + -1y2 + y2
-9 + -5y + y2 = 2y + -2y + -1y2 + y2

Combine like terms: 2y + -2y = 0
-9 + -5y + y2 = 0 + -1y2 + y2
-9 + -5y + y2 = -1y2 + y2

Combine like terms: -1y2 + y2 = 0
-9 + -5y + y2 = 0

Begin completing the square.

Move the constant term to the right:

Add '9' to each side of the equation.
-9 + -5y + 9 + y2 = 0 + 9

Reorder the terms:
-9 + 9 + -5y + y2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -5y + y2 = 0 + 9
-5y + y2 = 0 + 9

Combine like terms: 0 + 9 = 9
-5y + y2 = 9

The y term is -5y.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5y + 6.25 + y2 = 9 + 6.25

Reorder the terms:
6.25 + -5y + y2 = 9 + 6.25

Combine like terms: 9 + 6.25 = 15.25
6.25 + -5y + y2 = 15.25

Factor a perfect square on the left side:
(y + -2.5)(y + -2.5) = 15.25

Calculate the square root of the right side: 3.905124838

Break this problem into two subproblems by setting 
(y + -2.5) equal to 3.905124838 and -3.905124838.

Subproblem 1

y + -2.5 = 3.905124838 Simplifying y + -2.5 = 3.905124838 Reorder the terms: -2.5 + y = 3.905124838 Solving -2.5 + y = 3.905124838 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + y = 3.905124838 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + y = 3.905124838 + 2.5 y = 3.905124838 + 2.5 Combine like terms: 3.905124838 + 2.5 = 6.405124838 y = 6.405124838 Simplifying y = 6.405124838

Subproblem 2

y + -2.5 = -3.905124838 Simplifying y + -2.5 = -3.905124838 Reorder the terms: -2.5 + y = -3.905124838 Solving -2.5 + y = -3.905124838 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + y = -3.905124838 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + y = -3.905124838 + 2.5 y = -3.905124838 + 2.5 Combine like terms: -3.905124838 + 2.5 = -1.405124838 y = -1.405124838 Simplifying y = -1.405124838

Solution

The solution to the problem is based on the solutions from the subproblems. y = {6.405124838, -1.405124838}

See similar equations:

| 4m+2n+5m+6n= | | 9h-3=8 | | 4m+2n+5m+6m= | | 6-4x=-8+3x | | 2/15=-y/5 | | 14+4(a-5)=18-4a | | 8.1x+27.56=-11.9x+26.46 | | 2ln(2x)=2+lnp | | 4m+2m+5m+6n= | | 41a-(4a-18)= | | 20=9a+8-15a | | 5(4z-1)-2(z+7)=14(z+1) | | P+1274=11624 | | 7+7(x-4)=4-2(x-1) | | (2v^2-3v+4)-(-6v^2+v+5)= | | g+45=4g | | -26=13n | | 142/200=0.07x | | N+6=-1-6 | | 2x-36=-6 | | Y=5x^2+8.8x+5 | | 5x-1=4x-17 | | 0.6w+2w^2=4.6 | | 9x-16=19x-23 | | -0.040=-1/n^2 | | 2x^2+0.6x+4.6=0 | | X^25x+6=0 | | 9(x-4)=9+-33 | | 12x^4y-3x^2y= | | 1/(x^2)=0.04 | | 1/x^2=0.04 | | f(x)=(4x)/(5x-4) |

Equations solver categories