2a^2+6a+9=0

Simple and best practice solution for 2a^2+6a+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 2a^2+6a+9=0 equation:


Simplifying
2a2 + 6a + 9 = 0

Reorder the terms:
9 + 6a + 2a2 = 0

Solving
9 + 6a + 2a2 = 0

Solving for variable 'a'.

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

Divide each side by '2'.
4.5 + 3a + a2 = 0

Move the constant term to the right:

Add '-4.5' to each side of the equation.
4.5 + 3a + -4.5 + a2 = 0 + -4.5

Reorder the terms:
4.5 + -4.5 + 3a + a2 = 0 + -4.5

Combine like terms: 4.5 + -4.5 = 0.0
0.0 + 3a + a2 = 0 + -4.5
3a + a2 = 0 + -4.5

Combine like terms: 0 + -4.5 = -4.5
3a + a2 = -4.5

The a term is 3a.  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.
3a + 2.25 + a2 = -4.5 + 2.25

Reorder the terms:
2.25 + 3a + a2 = -4.5 + 2.25

Combine like terms: -4.5 + 2.25 = -2.25
2.25 + 3a + a2 = -2.25

Factor a perfect square on the left side:
(a + 1.5)(a + 1.5) = -2.25

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 3+2xm=7 | | -8x+3(-8x+1)=-7x+3(1+4x) | | -90+t=-35 | | -4(6y-7)-y=-2(y-4) | | -7(3-6m)-6(7m+8)=65 | | an=-3n-4 | | -6-(-n+6)=2-6n | | y=(5+4k)x | | x-21=-16 | | 48x=4x-7 | | 37+56=2x-4 | | 4/10•3/10 | | X+88=x+98 | | 3x+8+2x=x-4 | | f(x)=12x-3 | | 6(-8x+3)+5(x+3)=76 | | 7(1-p)=-(2p-1)+7 | | 2b(3b^2-4b+6)= | | x/5=22-20 | | 5v(v-2)-3v=-4 | | -g-(9-2g)=46 | | X(.16)+x=290 | | 37+56=2y-4 | | 90+0.50x=60+0.80x | | 2(3x-14)=(3x-14) | | 7=4.7v-7.2v | | 4m+3n-m-5n= | | 17-y=-12 | | -1/2(x-3)1/4 | | 32/28 | | f(x)=-[x-7]+3 | | X(.16)+x=250 |

Equations solver categories