1-3y-2y^2=0

Simple and best practice solution for 1-3y-2y^2=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 1-3y-2y^2=0 equation:


Simplifying
1 + -3y + -2y2 = 0

Solving
1 + -3y + -2y2 = 0

Solving for variable 'y'.

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

Divide each side by '-2'.
-0.5 + 1.5y + y2 = 0

Move the constant term to the right:

Add '0.5' to each side of the equation.
-0.5 + 1.5y + 0.5 + y2 = 0 + 0.5

Reorder the terms:
-0.5 + 0.5 + 1.5y + y2 = 0 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + 1.5y + y2 = 0 + 0.5
1.5y + y2 = 0 + 0.5

Combine like terms: 0 + 0.5 = 0.5
1.5y + y2 = 0.5

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 = 0.5 + 0.5625

Reorder the terms:
0.5625 + 1.5y + y2 = 0.5 + 0.5625

Combine like terms: 0.5 + 0.5625 = 1.0625
0.5625 + 1.5y + y2 = 1.0625

Factor a perfect square on the left side:
(y + 0.75)(y + 0.75) = 1.0625

Calculate the square root of the right side: 1.030776406

Break this problem into two subproblems by setting 
(y + 0.75) equal to 1.030776406 and -1.030776406.

Subproblem 1

y + 0.75 = 1.030776406 Simplifying y + 0.75 = 1.030776406 Reorder the terms: 0.75 + y = 1.030776406 Solving 0.75 + y = 1.030776406 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 = 1.030776406 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + y = 1.030776406 + -0.75 y = 1.030776406 + -0.75 Combine like terms: 1.030776406 + -0.75 = 0.280776406 y = 0.280776406 Simplifying y = 0.280776406

Subproblem 2

y + 0.75 = -1.030776406 Simplifying y + 0.75 = -1.030776406 Reorder the terms: 0.75 + y = -1.030776406 Solving 0.75 + y = -1.030776406 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 = -1.030776406 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + y = -1.030776406 + -0.75 y = -1.030776406 + -0.75 Combine like terms: -1.030776406 + -0.75 = -1.780776406 y = -1.780776406 Simplifying y = -1.780776406

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.280776406, -1.780776406}

See similar equations:

| d^2+5d= | | 25x-2=50x+8 | | 25x-2=50x-8 | | 2n+6=26 | | 3(2x+9)=-26+17 | | 3x+14+(2x-7)=7x+(29-4x) | | v/9=5/11 | | x+25+x+25+3x-20=180 | | -0.7x+0.2x-6=-1 | | 7z+5t= | | 7y-3=-8 | | 7x-14-x+2=0 | | 4x+1-x=2+2x-8 | | R=0.3x^2+12x | | -4(x+9)=2-3x | | r=.3x^2+12x | | 8x+x=8x+1 | | 9(x+3)-4=4x+5(5+x) | | (7+2x)5=5x+10 | | -7x-4y+3z=0 | | y^4-7y^3+12y^2-5y=1 | | 3(2x-3)=(8x+9)+4 | | 3m-2n=-1 | | 4(5x-8)+9=20x-23 | | -45=3r | | 2b+15=7 | | 6x-1=6(x-5) | | -3(x-3)+9x=8x-9 | | 3a^2-8=10a | | -2(-8y+6)-5y=7(y-2)-8 | | 5(-15-7)=110 | | 0.14(y-4)+0.08y=0.02y-0.03(20) |

Equations solver categories