6y^2-9y=-1

Simple and best practice solution for 6y^2-9y=-1 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 6y^2-9y=-1 equation:


Simplifying
6y2 + -9y = -1

Reorder the terms:
-9y + 6y2 = -1

Solving
-9y + 6y2 = -1

Solving for variable 'y'.

Reorder the terms:
1 + -9y + 6y2 = -1 + 1

Combine like terms: -1 + 1 = 0
1 + -9y + 6y2 = 0

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

Divide each side by '6'.
0.1666666667 + -1.5y + y2 = 0

Move the constant term to the right:

Add '-0.1666666667' to each side of the equation.
0.1666666667 + -1.5y + -0.1666666667 + y2 = 0 + -0.1666666667

Reorder the terms:
0.1666666667 + -0.1666666667 + -1.5y + y2 = 0 + -0.1666666667

Combine like terms: 0.1666666667 + -0.1666666667 = 0.0000000000
0.0000000000 + -1.5y + y2 = 0 + -0.1666666667
-1.5y + y2 = 0 + -0.1666666667

Combine like terms: 0 + -0.1666666667 = -0.1666666667
-1.5y + y2 = -0.1666666667

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 = -0.1666666667 + 0.5625

Reorder the terms:
0.5625 + -1.5y + y2 = -0.1666666667 + 0.5625

Combine like terms: -0.1666666667 + 0.5625 = 0.3958333333
0.5625 + -1.5y + y2 = 0.3958333333

Factor a perfect square on the left side:
(y + -0.75)(y + -0.75) = 0.3958333333

Calculate the square root of the right side: 0.62915287

Break this problem into two subproblems by setting 
(y + -0.75) equal to 0.62915287 and -0.62915287.

Subproblem 1

y + -0.75 = 0.62915287 Simplifying y + -0.75 = 0.62915287 Reorder the terms: -0.75 + y = 0.62915287 Solving -0.75 + y = 0.62915287 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 = 0.62915287 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + y = 0.62915287 + 0.75 y = 0.62915287 + 0.75 Combine like terms: 0.62915287 + 0.75 = 1.37915287 y = 1.37915287 Simplifying y = 1.37915287

Subproblem 2

y + -0.75 = -0.62915287 Simplifying y + -0.75 = -0.62915287 Reorder the terms: -0.75 + y = -0.62915287 Solving -0.75 + y = -0.62915287 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 = -0.62915287 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + y = -0.62915287 + 0.75 y = -0.62915287 + 0.75 Combine like terms: -0.62915287 + 0.75 = 0.12084713 y = 0.12084713 Simplifying y = 0.12084713

Solution

The solution to the problem is based on the solutions from the subproblems. y = {1.37915287, 0.12084713}

See similar equations:

| x/-8+6=10 | | (x-2)+2(x-1)=2x-3 | | (x+5)+(2y+4x-2)= | | 27/8-2.9 | | n^2-2n+1=5 | | =-P | | 6+y=4+3y | | 4(3d+2)=8d-5 | | -8x-7+5x=29 | | 6/5(x+3)=66 | | 25+56= | | 25+42= | | 7/3x-5=4x+2/11 | | 182=125-v | | 85=2.5x+y | | 3p+1=16 | | u-5.58=6.4 | | x+7/5x-1=3x+1/9x-2 | | 2y+4y=18 | | 18+4ln(x)=8 | | -x+243=158 | | 4x^2-25x+8=-8x+4 | | 2x-70+130=180 | | 2x-5/3x+4+1=0 | | 176=46-u | | -2x+2+x=3x+3-4x | | 173=-y+84 | | X-40=3X+20 | | X-40=3X-20 | | (3/x-1)+(2x/5) | | 1425/120=x/250 | | 1.4k=3.08 |

Equations solver categories