4y+4=9y^2+7y-6

Simple and best practice solution for 4y+4=9y^2+7y-6 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 4y+4=9y^2+7y-6 equation:


Simplifying
4y + 4 = 9y2 + 7y + -6

Reorder the terms:
4 + 4y = 9y2 + 7y + -6

Reorder the terms:
4 + 4y = -6 + 7y + 9y2

Solving
4 + 4y = -6 + 7y + 9y2

Solving for variable 'y'.

Reorder the terms:
4 + 6 + 4y + -7y + -9y2 = -6 + 7y + 9y2 + 6 + -7y + -9y2

Combine like terms: 4 + 6 = 10
10 + 4y + -7y + -9y2 = -6 + 7y + 9y2 + 6 + -7y + -9y2

Combine like terms: 4y + -7y = -3y
10 + -3y + -9y2 = -6 + 7y + 9y2 + 6 + -7y + -9y2

Reorder the terms:
10 + -3y + -9y2 = -6 + 6 + 7y + -7y + 9y2 + -9y2

Combine like terms: -6 + 6 = 0
10 + -3y + -9y2 = 0 + 7y + -7y + 9y2 + -9y2
10 + -3y + -9y2 = 7y + -7y + 9y2 + -9y2

Combine like terms: 7y + -7y = 0
10 + -3y + -9y2 = 0 + 9y2 + -9y2
10 + -3y + -9y2 = 9y2 + -9y2

Combine like terms: 9y2 + -9y2 = 0
10 + -3y + -9y2 = 0

Begin completing the square.  Divide all terms by
-9 the coefficient of the squared term: 

Divide each side by '-9'.
-1.111111111 + 0.3333333333y + y2 = 0

Move the constant term to the right:

Add '1.111111111' to each side of the equation.
-1.111111111 + 0.3333333333y + 1.111111111 + y2 = 0 + 1.111111111

Reorder the terms:
-1.111111111 + 1.111111111 + 0.3333333333y + y2 = 0 + 1.111111111

Combine like terms: -1.111111111 + 1.111111111 = 0.000000000
0.000000000 + 0.3333333333y + y2 = 0 + 1.111111111
0.3333333333y + y2 = 0 + 1.111111111

Combine like terms: 0 + 1.111111111 = 1.111111111
0.3333333333y + y2 = 1.111111111

The y term is 0.3333333333y.  Take half its coefficient (0.1666666667).
Square it (0.02777777779) and add it to both sides.

Add '0.02777777779' to each side of the equation.
0.3333333333y + 0.02777777779 + y2 = 1.111111111 + 0.02777777779

Reorder the terms:
0.02777777779 + 0.3333333333y + y2 = 1.111111111 + 0.02777777779

Combine like terms: 1.111111111 + 0.02777777779 = 1.13888888879
0.02777777779 + 0.3333333333y + y2 = 1.13888888879

Factor a perfect square on the left side:
(y + 0.1666666667)(y + 0.1666666667) = 1.13888888879

Calculate the square root of the right side: 1.067187373

Break this problem into two subproblems by setting 
(y + 0.1666666667) equal to 1.067187373 and -1.067187373.

Subproblem 1

y + 0.1666666667 = 1.067187373 Simplifying y + 0.1666666667 = 1.067187373 Reorder the terms: 0.1666666667 + y = 1.067187373 Solving 0.1666666667 + y = 1.067187373 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.1666666667' to each side of the equation. 0.1666666667 + -0.1666666667 + y = 1.067187373 + -0.1666666667 Combine like terms: 0.1666666667 + -0.1666666667 = 0.0000000000 0.0000000000 + y = 1.067187373 + -0.1666666667 y = 1.067187373 + -0.1666666667 Combine like terms: 1.067187373 + -0.1666666667 = 0.9005207063 y = 0.9005207063 Simplifying y = 0.9005207063

Subproblem 2

y + 0.1666666667 = -1.067187373 Simplifying y + 0.1666666667 = -1.067187373 Reorder the terms: 0.1666666667 + y = -1.067187373 Solving 0.1666666667 + y = -1.067187373 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.1666666667' to each side of the equation. 0.1666666667 + -0.1666666667 + y = -1.067187373 + -0.1666666667 Combine like terms: 0.1666666667 + -0.1666666667 = 0.0000000000 0.0000000000 + y = -1.067187373 + -0.1666666667 y = -1.067187373 + -0.1666666667 Combine like terms: -1.067187373 + -0.1666666667 = -1.2338540397 y = -1.2338540397 Simplifying y = -1.2338540397

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.9005207063, -1.2338540397}

See similar equations:

| 9x(x+2)=-8 | | 19w^5+(-30w^5)= | | (x+5/4)=(3/4x) | | 3n^2-10=3n | | 2y-7+5y-8= | | 9(3n-3)=(8n+4)+9 | | 6b^2+7b=2 | | x+21+4x=-23-4x-28 | | 4x^2=10-2x | | 3n^2-59=-11 | | 6(5x+8)+6=30x+54 | | 58+3y-26=11y-10-2y | | 16=2w+2(2w+2) | | 2z=15-17 | | -2x=15-17 | | 2p^2+2=-5p | | (-4x+7)(10x-6)=f | | p^2+6p+8=3 | | 4a^2-60=a | | -22+7=x-3 | | 8x=4(4x+10) | | 86-4x=26+20 | | 96x+24561y=190002 | | 4x+120=9x-10 | | 86+12=-58-9x | | 6x+5y-2x+4y= | | 5x-28+3x-10=180 | | 2x+42=4x-14 | | 3+4(s-2t)= | | 11x-5=5x+47 | | y=4[z]+2 | | y=x+r |

Equations solver categories