y^2+3y+8=0

Simple and best practice solution for y^2+3y+8=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+3y+8=0 equation:


Simplifying
y2 + 3y + 8 = 0

Reorder the terms:
8 + 3y + y2 = 0

Solving
8 + 3y + y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '-8' to each side of the equation.
8 + 3y + -8 + y2 = 0 + -8

Reorder the terms:
8 + -8 + 3y + y2 = 0 + -8

Combine like terms: 8 + -8 = 0
0 + 3y + y2 = 0 + -8
3y + y2 = 0 + -8

Combine like terms: 0 + -8 = -8
3y + y2 = -8

The y term is 3y.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3y + 2.25 + y2 = -8 + 2.25

Reorder the terms:
2.25 + 3y + y2 = -8 + 2.25

Combine like terms: -8 + 2.25 = -5.75
2.25 + 3y + y2 = -5.75

Factor a perfect square on the left side:
(y + 1.5)(y + 1.5) = -5.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 10x+35=75 | | y^2-11y-10=0 | | x^2+19=3 | | -3y-7=12 | | (3x^4+3x^2)-(-6x^2-5-2x^4)= | | 3(x+8)=5x+24 | | 4y-40=7(-2y+2) | | X^2-8/7x+2 | | X/3=9.2 | | 108=-16x^2-22x+220 | | 3X-30=6 | | 2x/3-8x-5/8=7/8 | | 6x^2+27x-234=0 | | 3x+4x^2-4=0 | | (5x+3)/(x^2-16) | | -9=36-12 | | 5/9(F-32)+273 | | 16=-20v+34 | | 16=-20+34 | | -2(x+3)=-15+3x-5 | | 2[4.5(x-2)-0.5x]=1 | | -19x+5-6x-20=1 | | 4m-7+4m=-6+5m-7 | | 41/4-2/3 | | 64-5x=13x+22 | | -12x/3+5x | | 4d-5=23 | | 3(x+2)=7(-x-1) | | 4x+-2=5X-2 | | -x/4=-5.5 | | 13+8x=-9+7 | | 7.2y=16.56 |

Equations solver categories