y^2-y-36=0

Simple and best practice solution for y^2-y-36=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 y^2-y-36=0 equation:


Simplifying
y2 + -1y + -36 = 0

Reorder the terms:
-36 + -1y + y2 = 0

Solving
-36 + -1y + y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '36' to each side of the equation.
-36 + -1y + 36 + y2 = 0 + 36

Reorder the terms:
-36 + 36 + -1y + y2 = 0 + 36

Combine like terms: -36 + 36 = 0
0 + -1y + y2 = 0 + 36
-1y + y2 = 0 + 36

Combine like terms: 0 + 36 = 36
-1y + y2 = 36

The y term is -1y.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1y + 0.25 + y2 = 36 + 0.25

Reorder the terms:
0.25 + -1y + y2 = 36 + 0.25

Combine like terms: 36 + 0.25 = 36.25
0.25 + -1y + y2 = 36.25

Factor a perfect square on the left side:
(y + -0.5)(y + -0.5) = 36.25

Calculate the square root of the right side: 6.020797289

Break this problem into two subproblems by setting 
(y + -0.5) equal to 6.020797289 and -6.020797289.

Subproblem 1

y + -0.5 = 6.020797289 Simplifying y + -0.5 = 6.020797289 Reorder the terms: -0.5 + y = 6.020797289 Solving -0.5 + y = 6.020797289 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + y = 6.020797289 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + y = 6.020797289 + 0.5 y = 6.020797289 + 0.5 Combine like terms: 6.020797289 + 0.5 = 6.520797289 y = 6.520797289 Simplifying y = 6.520797289

Subproblem 2

y + -0.5 = -6.020797289 Simplifying y + -0.5 = -6.020797289 Reorder the terms: -0.5 + y = -6.020797289 Solving -0.5 + y = -6.020797289 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + y = -6.020797289 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + y = -6.020797289 + 0.5 y = -6.020797289 + 0.5 Combine like terms: -6.020797289 + 0.5 = -5.520797289 y = -5.520797289 Simplifying y = -5.520797289

Solution

The solution to the problem is based on the solutions from the subproblems. y = {6.520797289, -5.520797289}

See similar equations:

| (2^2)^4/x^5 | | 3jk-4j+5jk-3j= | | 3x^3+x^3=10 | | 7xy+5xy-3y= | | 4xy*y^2*x^2= | | 4xy*y^2= | | 25x^2+100x+96=0 | | x^4+2x+36=0 | | 6.1*6.4= | | 3cosx-5sinx=0 | | b=a+14 | | 32=5(x+6)-7x | | 0=10-4x+x^2 | | (-x^3+8x-47)=0 | | X-0.6=2.2 | | (3x+4)(5x-2)=0 | | 2x+10+x=167 | | -3(5p+2)-2(6-11p)-3(7+2p)=0 | | 2x+10=x+167 | | 25000(4-3x)=125000 | | 3(2-5x)+2(5x+2)=3+x | | 5+2(s-4t)=0 | | t+6t+3t= | | 2/5(10x-17)-35(3x-1)-8=7-2/3(x-6) | | x^2-400/3x-1190 | | 3p+9=2p+15 | | 4r^2+30r=10r-20 | | 5(x+1)-3(x-3)=63 | | 5x-18=9x+2 | | 75=5*x+5*7 | | 100x=7 | | 68-2x=12-9x |

Equations solver categories