3(-2+y)+2y^2=12

Simple and best practice solution for 3(-2+y)+2y^2=12 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 3(-2+y)+2y^2=12 equation:


Simplifying
3(-2 + y) + 2y2 = 12
(-2 * 3 + y * 3) + 2y2 = 12
(-6 + 3y) + 2y2 = 12

Solving
-6 + 3y + 2y2 = 12

Solving for variable 'y'.

Reorder the terms:
-6 + -12 + 3y + 2y2 = 12 + -12

Combine like terms: -6 + -12 = -18
-18 + 3y + 2y2 = 12 + -12

Combine like terms: 12 + -12 = 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 = 2.342329219 y = 2.342329219 Simplifying y = 2.342329219

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 = -3.842329219 y = -3.842329219 Simplifying y = -3.842329219

Solution

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

See similar equations:

| 2(w+1)=7w+12 | | 5/5-z=3/3 | | y=3500(1+0.07) | | -5w-1=7(w-7) | | (1-(4/x+3))/(1+(2/x-3)) | | 30=-16t^2+10+30 | | -6(2.6)+6y=12 | | 630-7x=81x-162 | | -3d+-5+8d=-20 | | 3/5+f=1 | | -8(4+9m)=7(-2-11m) | | 25=-16t^2+30t+6 | | 15x=39 | | 4+5n=16-(2-3n) | | (5+3X)=(10+7X) | | -12=-5v | | 1/2(y-10)+y=10 | | 4(m-2)-(m+3)=m+1 | | 39=(3x-12) | | 12=6-3v | | 180x/x | | 5w-2v-9w+5v= | | 29y=55 | | 7=x^3+2x^2-48x+7 | | 1=4c^2+7c-14 | | 14m-26=-68 | | 7(5y-6)-6y=13 | | g(c)=4c^2+7c-14 | | 7(5y-6)-5y=6 | | 5(3x+8)-4(2x-3)=101 | | 6x+11x-1+5x+5=180 | | -3(y+8)=9y+48 |

Equations solver categories