y^2+2y=140

Simple and best practice solution for y^2+2y=140 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+2y=140 equation:


Simplifying
y2 + 2y = 140

Reorder the terms:
2y + y2 = 140

Solving
2y + y2 = 140

Solving for variable 'y'.

Reorder the terms:
-140 + 2y + y2 = 140 + -140

Combine like terms: 140 + -140 = 0
-140 + 2y + y2 = 0

Begin completing the square.

Move the constant term to the right:

Add '140' to each side of the equation.
-140 + 2y + 140 + y2 = 0 + 140

Reorder the terms:
-140 + 140 + 2y + y2 = 0 + 140

Combine like terms: -140 + 140 = 0
0 + 2y + y2 = 0 + 140
2y + y2 = 0 + 140

Combine like terms: 0 + 140 = 140
2y + y2 = 140

The y term is 2y.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2y + 1 + y2 = 140 + 1

Reorder the terms:
1 + 2y + y2 = 140 + 1

Combine like terms: 140 + 1 = 141
1 + 2y + y2 = 141

Factor a perfect square on the left side:
(y + 1)(y + 1) = 141

Calculate the square root of the right side: 11.874342087

Break this problem into two subproblems by setting 
(y + 1) equal to 11.874342087 and -11.874342087.

Subproblem 1

y + 1 = 11.874342087 Simplifying y + 1 = 11.874342087 Reorder the terms: 1 + y = 11.874342087 Solving 1 + y = 11.874342087 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + y = 11.874342087 + -1 Combine like terms: 1 + -1 = 0 0 + y = 11.874342087 + -1 y = 11.874342087 + -1 Combine like terms: 11.874342087 + -1 = 10.874342087 y = 10.874342087 Simplifying y = 10.874342087

Subproblem 2

y + 1 = -11.874342087 Simplifying y + 1 = -11.874342087 Reorder the terms: 1 + y = -11.874342087 Solving 1 + y = -11.874342087 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + y = -11.874342087 + -1 Combine like terms: 1 + -1 = 0 0 + y = -11.874342087 + -1 y = -11.874342087 + -1 Combine like terms: -11.874342087 + -1 = -12.874342087 y = -12.874342087 Simplifying y = -12.874342087

Solution

The solution to the problem is based on the solutions from the subproblems. y = {10.874342087, -12.874342087}

See similar equations:

| 32=-35+17 | | 10-5m=15 | | 69=15n+9 | | 5m-2m+14=31 | | 59=2g+23 | | X^2+8X-6Y+4=0 | | 5m-2m-14=31 | | (4x+5)+(3x-3)= | | 4x^2+4y^2+5=0 | | 2x+4+1=7 | | 3X^2-12X-6Y+9=0 | | 60000=9 | | 9r=3000 | | (2cosx-1)(cos^2x-1)=0 | | 4b^2-40b-64=0 | | 9=60000 | | K^2+28=-11k | | 7n-18.9=7.5-3 | | m^2+7p=0 | | -x+12=-5 | | 5(3v-11)=-10 | | x(4x+44)=153 | | -9=-4f+7 | | -13.3+k=-0.296 | | f(x)=4x^3-15x^2-72x+5 | | -2-b=-5+4(4b+5) | | 4y-12=10 | | 6k+8=8 | | 3+y-8=22 | | -12p+4=100 | | 3d+1=97 | | j^2+18j+7=0 |

Equations solver categories