9=y2+2y+2y+4

Simple and best practice solution for 9=y2+2y+2y+4 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 9=y2+2y+2y+4 equation:



9=y2+2y+2y+4
We move all terms to the left:
9-(y2+2y+2y+4)=0
We add all the numbers together, and all the variables
-(+y^2+4y+4)+9=0
We get rid of parentheses
-y^2-4y-4+9=0
We add all the numbers together, and all the variables
-1y^2-4y+5=0
a = -1; b = -4; c = +5;
Δ = b2-4ac
Δ = -42-4·(-1)·5
Δ = 36
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{36}=6$
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-4)-6}{2*-1}=\frac{-2}{-2} =1 $
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-4)+6}{2*-1}=\frac{10}{-2} =-5 $

See similar equations:

| 9=y2+2y+2y+49=y2+4y+4 | | 5r-4=5 | | k5=8 | | 24x-44=2x | | c+5(c+3)=33 | | 1/3y+4=y | | 3x+18=2x+17 | | 3x2−20=55 | | 5x6+7=21+x | | 7x+3(x-4)=10(2x+1)-2 | | −6x−9=4x+11/ | | m+4=−3 | | X+5y=4.75 | | n3=13;n=39 | | 9y=18y+9 | | -2y+7=-7 | | -9-7f=5 | | (650-x)=3/4(700-x) | | (650-x)=3/4(700-×) | | 34+8=n(n+4) | | -4+6c=32 | | 7x^2+14=63 | | x-0.6=312 | | K(x)=-4+2xK(36)= | | 10(x^2-5)=75 | | K(x)=-4+2x | | 80x^2=80 | | 3^y+1=8 | | 9(x+1)-(x+2)=-79 | | 10+5b=-60 | | 2p^2+13p-24=0 | | 8(s-9)=-5+(-4) |

Equations solver categories