a^2+3a+13=0

Simple and best practice solution for a^2+3a+13=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 a^2+3a+13=0 equation:


Simplifying
a2 + 3a + 13 = 0

Reorder the terms:
13 + 3a + a2 = 0

Solving
13 + 3a + a2 = 0

Solving for variable 'a'.

Begin completing the square.

Move the constant term to the right:

Add '-13' to each side of the equation.
13 + 3a + -13 + a2 = 0 + -13

Reorder the terms:
13 + -13 + 3a + a2 = 0 + -13

Combine like terms: 13 + -13 = 0
0 + 3a + a2 = 0 + -13
3a + a2 = 0 + -13

Combine like terms: 0 + -13 = -13
3a + a2 = -13

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 = -13 + 2.25

Reorder the terms:
2.25 + 3a + a2 = -13 + 2.25

Combine like terms: -13 + 2.25 = -10.75
2.25 + 3a + a2 = -10.75

Factor a perfect square on the left side:
(a + 1.5)(a + 1.5) = -10.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| (4+8i)*(4-8i)=x | | -3=-1/4*-3 | | 3(3-x)=6 | | 9x^2-8x+3/4x^2+1 | | 1/8x+6=-9 | | 7z-7=2z-2 | | 4m-7=14 | | x/5+x/4=63/20 | | -3=-1/4*3 | | (x+5)5=4x | | 1+4(1-3k)=6k+23 | | -3=-3*-3+1 | | 4x^3+9x^2-20x=0 | | 7x-(5x+4)=14 | | -3=4*-3-3 | | -x^2-93x+700=0 | | x/9=-1 | | -3=-3+9 | | 16+4v=8(v+2) | | 126x+756+42x+1680=420 | | 5y+3x-13y+5x= | | 0=-5*0-8 | | 2a-23=5(2+7a) | | 16x-10y=-5 | | 5x+2.5=-3x+1.1 | | x+3/x+5=X-1/x-4 | | 0.80y-8=0.40y+16 | | 20-4r=-4(-5r-5) | | 396p^2-539q^2=0 | | 0=-1/4*0 | | -3b+26=3(-6b+7)+5 | | 0=(-0)+4 |

Equations solver categories