y^2+8y-764=0

Simple and best practice solution for y^2+8y-764=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+8y-764=0 equation:


Simplifying
y2 + 8y + -764 = 0

Reorder the terms:
-764 + 8y + y2 = 0

Solving
-764 + 8y + y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '764' to each side of the equation.
-764 + 8y + 764 + y2 = 0 + 764

Reorder the terms:
-764 + 764 + 8y + y2 = 0 + 764

Combine like terms: -764 + 764 = 0
0 + 8y + y2 = 0 + 764
8y + y2 = 0 + 764

Combine like terms: 0 + 764 = 764
8y + y2 = 764

The y term is 8y.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8y + 16 + y2 = 764 + 16

Reorder the terms:
16 + 8y + y2 = 764 + 16

Combine like terms: 764 + 16 = 780
16 + 8y + y2 = 780

Factor a perfect square on the left side:
(y + 4)(y + 4) = 780

Calculate the square root of the right side: 27.928480088

Break this problem into two subproblems by setting 
(y + 4) equal to 27.928480088 and -27.928480088.

Subproblem 1

y + 4 = 27.928480088 Simplifying y + 4 = 27.928480088 Reorder the terms: 4 + y = 27.928480088 Solving 4 + y = 27.928480088 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + y = 27.928480088 + -4 Combine like terms: 4 + -4 = 0 0 + y = 27.928480088 + -4 y = 27.928480088 + -4 Combine like terms: 27.928480088 + -4 = 23.928480088 y = 23.928480088 Simplifying y = 23.928480088

Subproblem 2

y + 4 = -27.928480088 Simplifying y + 4 = -27.928480088 Reorder the terms: 4 + y = -27.928480088 Solving 4 + y = -27.928480088 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + y = -27.928480088 + -4 Combine like terms: 4 + -4 = 0 0 + y = -27.928480088 + -4 y = -27.928480088 + -4 Combine like terms: -27.928480088 + -4 = -31.928480088 y = -31.928480088 Simplifying y = -31.928480088

Solution

The solution to the problem is based on the solutions from the subproblems. y = {23.928480088, -31.928480088}

See similar equations:

| 4x-3(2-x)-3(2x-1)=3x-6 | | N7/n2 | | (m-4)/4= | | int(cos(x^3))= | | 5z*2+10z= | | 1+4b=9 | | F(x)=200x+750 | | N3/n2 | | 8xln(x)+4x=0 | | -6(2*t+5)=-30 | | 7(5b+8)= | | 9y+y=64 | | -23+7k=-8k+7(4k+6) | | 30v+50y= | | 5(f-7)=-20 | | 8x*4x=100 | | -(c-3)=-62 | | x/5/1/3=x/1/2 | | 3y=2+x | | 44/3/9 | | 4a*2b*2+2a*b-10ab*2= | | 15+t=10 | | 9x+19-7x+19=-2 | | 2x-4=9x+9 | | -12w+16=4w-96 | | (6+7i)(7+i)= | | 5x-3+7=3x+12 | | Y=lne^5(x) | | y=2(5)-13 | | 3x/5=2x | | -5x-13+3x=27 | | 64b=8 |

Equations solver categories