18+2y+y=2y*y

Simple and best practice solution for 18+2y+y=2y*y 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 18+2y+y=2y*y equation:


Simplifying
18 + 2y + y = 2y * y

Combine like terms: 2y + y = 3y
18 + 3y = 2y * y

Multiply y * y
18 + 3y = 2y2

Solving
18 + 3y = 2y2

Solving for variable 'y'.

Combine like terms: 2y2 + -2y2 = 0
18 + 3y + -2y2 = 0

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

Divide each side by '-2'.
-9 + -1.5y + y2 = 0

Move the constant term to the right:

Add '9' to each side of the equation.
-9 + -1.5y + 9 + y2 = 0 + 9

Reorder the terms:
-9 + 9 + -1.5y + y2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -1.5y + y2 = 0 + 9
-1.5y + y2 = 0 + 9

Combine like terms: 0 + 9 = 9
-1.5y + y2 = 9

The y term is -1.5y.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5y + 0.5625 + y2 = 9 + 0.5625

Reorder the terms:
0.5625 + -1.5y + y2 = 9 + 0.5625

Combine like terms: 9 + 0.5625 = 9.5625
0.5625 + -1.5y + y2 = 9.5625

Factor a perfect square on the left side:
(y + -0.75)(y + -0.75) = 9.5625

Calculate the square root of the right side: 3.092329219

Break this problem into two subproblems by setting 
(y + -0.75) equal to 3.092329219 and -3.092329219.

Subproblem 1

y + -0.75 = 3.092329219 Simplifying y + -0.75 = 3.092329219 Reorder the terms: -0.75 + y = 3.092329219 Solving -0.75 + y = 3.092329219 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + y = 3.092329219 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + y = 3.092329219 + 0.75 y = 3.092329219 + 0.75 Combine like terms: 3.092329219 + 0.75 = 3.842329219 y = 3.842329219 Simplifying y = 3.842329219

Subproblem 2

y + -0.75 = -3.092329219 Simplifying y + -0.75 = -3.092329219 Reorder the terms: -0.75 + y = -3.092329219 Solving -0.75 + y = -3.092329219 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + y = -3.092329219 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + y = -3.092329219 + 0.75 y = -3.092329219 + 0.75 Combine like terms: -3.092329219 + 0.75 = -2.342329219 y = -2.342329219 Simplifying y = -2.342329219

Solution

The solution to the problem is based on the solutions from the subproblems. y = {3.842329219, -2.342329219}

See similar equations:

| 4(1+7x)=-276 | | 7-3(2x-1)=22 | | 7v+5=12v-5 | | z^4-z^3+2z^2-4z-8=0 | | 5(x^2+5)=100 | | -2r^2+5r-11=0 | | 1/t^-5 | | 4e^3x=1940 | | f(x)=-x^3-8x^2-17x-10 | | 2r^2=-11+5r | | 3p-5=p-7 | | -6(-4w+4)-5w=4(w-7)-6 | | b-1=2+1 | | -6(x-2)+4(3-6x)=-56 | | 2x^9+4x^3+90=0 | | b/8=a | | 4a-2=-22 | | 3(x+8)=-4(2x-2)+x | | 2v^2+23v+56=0 | | 2w-26=4 | | -6x+36=-2(x-8) | | 14k^2-13k-12=0 | | 5(x+2)+5=2x+3(5+x) | | 8a+2=-30 | | -3(y-9)=6y-45 | | 4(x-9)+7=4x+5 | | 4+3x=7x+20 | | 3a-4=-5 | | 5x(10)=-8x(1) | | 50+20+10=180 | | 3(x-3)-7=-2(-6x+1)-x | | x-3y=12y |

Equations solver categories