2y^2+5y+9=0

Simple and best practice solution for 2y^2+5y+9=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 2y^2+5y+9=0 equation:


Simplifying
2y2 + 5y + 9 = 0

Reorder the terms:
9 + 5y + 2y2 = 0

Solving
9 + 5y + 2y2 = 0

Solving for variable 'y'.

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

Divide each side by '2'.
4.5 + 2.5y + y2 = 0

Move the constant term to the right:

Add '-4.5' to each side of the equation.
4.5 + 2.5y + -4.5 + y2 = 0 + -4.5

Reorder the terms:
4.5 + -4.5 + 2.5y + y2 = 0 + -4.5

Combine like terms: 4.5 + -4.5 = 0.0
0.0 + 2.5y + y2 = 0 + -4.5
2.5y + y2 = 0 + -4.5

Combine like terms: 0 + -4.5 = -4.5
2.5y + y2 = -4.5

The y term is 2.5y.  Take half its coefficient (1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
2.5y + 1.5625 + y2 = -4.5 + 1.5625

Reorder the terms:
1.5625 + 2.5y + y2 = -4.5 + 1.5625

Combine like terms: -4.5 + 1.5625 = -2.9375
1.5625 + 2.5y + y2 = -2.9375

Factor a perfect square on the left side:
(y + 1.25)(y + 1.25) = -2.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 6c^2+c-40=0 | | -8+36t-16t^2=0 | | 14x-62=-(12x) | | 13x-5=-x-19 | | 12x^2-20x+7=0 | | n^2-11n-14=0 | | y=10-15 | | 9t^3+66t^2-48t=0 | | 6(5x-1)=90 | | 3(x+3)=4x+5-x+4 | | 2x-10-x=5 | | .4x+.25(75-x)=30 | | 3a^2+20a+32=0 | | n+2=14 | | 6n-42=4n+8 | | (4a-5)+(3a+6)= | | -8(4x-12)+3(x-9)= | | 4a-5+3a+6= | | 5x-20y=100 | | 0.4x-0.2=-0.8 | | .4x+.25x(75-x)=30 | | 12y-9=-15+10y | | 3(x-4)=6x-5-3x | | 3k-8=-8 | | a=3(b-x) | | 5n+27=-4n | | 4x^2+31x+8=0 | | .4x+.25(100-x)=31 | | 2x-x^2+4=-7 | | 13-(x+5)=7x-8 | | 4w=132 | | x^2-2x-26=0 |

Equations solver categories