-8=y(y-2)

Simple and best practice solution for -8=y(y-2) 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 -8=y(y-2) equation:


Simplifying
-8 = y(y + -2)

Reorder the terms:
-8 = y(-2 + y)
-8 = (-2 * y + y * y)
-8 = (-2y + y2)

Solving
-8 = -2y + y2

Solving for variable 'y'.

Reorder the terms:
-8 + 2y + -1y2 = -2y + 2y + y2 + -1y2

Combine like terms: -2y + 2y = 0
-8 + 2y + -1y2 = 0 + y2 + -1y2
-8 + 2y + -1y2 = y2 + -1y2

Combine like terms: y2 + -1y2 = 0
-8 + 2y + -1y2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
8 + -2y + y2 = 0

Move the constant term to the right:

Add '-8' to each side of the equation.
8 + -2y + -8 + y2 = 0 + -8

Reorder the terms:
8 + -8 + -2y + y2 = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -2y + y2 = 0 + -8
-2y + y2 = 0 + -8

Combine like terms: 0 + -8 = -8
-2y + y2 = -8

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 = -8 + 1

Reorder the terms:
1 + -2y + y2 = -8 + 1

Combine like terms: -8 + 1 = -7
1 + -2y + y2 = -7

Factor a perfect square on the left side:
(y + -1)(y + -1) = -7

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| -8=yy-2y | | 9x/4-6=2x/3+1/3 | | 6x-(5-3x)=-3(x+1) | | 9x(x+5)-8(x+5)=0 | | n^2+23n-100=0 | | P(x)=0.1*x+70 | | 0.5x+150=-0.791339x+186.693 | | y=x^2+12x+24 | | 12-x=21-2x | | 63+18-x=27 | | 2(y+5)-7y=-15 | | (x+37)+(x+8)=71 | | x^2-y^2=99n | | (x-y)(x+y)=99n | | (x+37)+(x+8)=67 | | 3.24x=80 | | 0.2x-0.1(2-x)=1 | | 9h-19=44 | | (x+16)(x-16)=0 | | 43+2x=72 | | (x+36)+(x+7)=72 | | 6x-21xy=0 | | 7x-12=26 | | 4(x-5)=52-5x | | 6(5x-2)=0 | | 3x-1=64-10x | | 4x(8-x)=0 | | 2x^2-10x-168=0 | | ln(x-9)-2*ln(x-3)=-2*ln(5) | | 65x^2-79x+24=646 | | 8x+16=2x+46 | | x^3-24*x^2+144*x=x^3-20*x^2+100*x |

Equations solver categories