3a^2+6a=-5

Simple and best practice solution for 3a^2+6a=-5 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 3a^2+6a=-5 equation:


Simplifying
3a2 + 6a = -5

Reorder the terms:
6a + 3a2 = -5

Solving
6a + 3a2 = -5

Solving for variable 'a'.

Reorder the terms:
5 + 6a + 3a2 = -5 + 5

Combine like terms: -5 + 5 = 0
5 + 6a + 3a2 = 0

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

Divide each side by '3'.
1.666666667 + 2a + a2 = 0

Move the constant term to the right:

Add '-1.666666667' to each side of the equation.
1.666666667 + 2a + -1.666666667 + a2 = 0 + -1.666666667

Reorder the terms:
1.666666667 + -1.666666667 + 2a + a2 = 0 + -1.666666667

Combine like terms: 1.666666667 + -1.666666667 = 0.000000000
0.000000000 + 2a + a2 = 0 + -1.666666667
2a + a2 = 0 + -1.666666667

Combine like terms: 0 + -1.666666667 = -1.666666667
2a + a2 = -1.666666667

The a term is 2a.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2a + 1 + a2 = -1.666666667 + 1

Reorder the terms:
1 + 2a + a2 = -1.666666667 + 1

Combine like terms: -1.666666667 + 1 = -0.666666667
1 + 2a + a2 = -0.666666667

Factor a perfect square on the left side:
(a + 1)(a + 1) = -0.666666667

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 6(5k-8)-20=12(2k-3)+3k | | -2(2x+-4)= | | 36x^3-25x=0 | | w-3(2/3)=4(5/6) | | -6+2/3m=14 | | x^3=8x^2-16x | | x+4+7x+6= | | q/3=18 | | 50=2*3a | | 9/3=18 | | -3+2x+5x+8= | | -12-4(-5/9)=x | | x+5-7x+-9= | | x-3+4x= | | 12=-36 | | 16x^2-56x-32=0 | | -12-4(-5/9) | | w-11/3=29/6 | | 20-0.4a=-45 | | 2(x-1)(x-1)+3=11 | | 1/4g=12 | | m*(m+3)=88 | | X=9(3x+5)-7 | | 5+8=9 | | 20-1/4a=-45 | | v/-10=-15 | | 15x-3(7-x)=11 | | 2m+3=88 | | 16x-5.2=-18.37 | | y=-2/3x-1 | | 2x+3-5x-7=1 | | y=1/4x+1 |

Equations solver categories