a^2+9a=-682

Simple and best practice solution for a^2+9a=-682 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+9a=-682 equation:


Simplifying
a2 + 9a = -682

Reorder the terms:
9a + a2 = -682

Solving
9a + a2 = -682

Solving for variable 'a'.

Reorder the terms:
682 + 9a + a2 = -682 + 682

Combine like terms: -682 + 682 = 0
682 + 9a + a2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-682' to each side of the equation.
682 + 9a + -682 + a2 = 0 + -682

Reorder the terms:
682 + -682 + 9a + a2 = 0 + -682

Combine like terms: 682 + -682 = 0
0 + 9a + a2 = 0 + -682
9a + a2 = 0 + -682

Combine like terms: 0 + -682 = -682
9a + a2 = -682

The a term is 9a.  Take half its coefficient (4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
9a + 20.25 + a2 = -682 + 20.25

Reorder the terms:
20.25 + 9a + a2 = -682 + 20.25

Combine like terms: -682 + 20.25 = -661.75
20.25 + 9a + a2 = -661.75

Factor a perfect square on the left side:
(a + 4.5)(a + 4.5) = -661.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 5x+2=-7+3x+17 | | 11K^2-9K=0 | | 11K^2-9m=0 | | 12x-9=4x+15 | | (2x-5)(3x-4)=(5x+4)(x+5) | | 14-5(8-3x)=19 | | 10x-17=6x+1 | | 46=15+h | | c-6+10=6 | | 16+7-q-5=14 | | 10+z+11=42 | | 13+j=42 | | 2x+4=7(x-8) | | j+9+5-4=38 | | 4u^3-101u^2+25=0 | | g-19=64 | | t+19+6+10+7=68 | | 11+b+18+3=56 | | 53=n-18 | | 50=3-4+16+v | | 9-w+16=22 | | 2x^2+20x-20=0 | | 45=8-13+e-17 | | 4x^2+7=16x | | 4y-3+y+43=7y+40-5y | | x^4-100= | | 15-3+a-4-5=17 | | 70=d+2+8+17+1 | | 4m^3-18m^2+8m= | | 43=7+f+6-9-19 | | 2u^2+5u+2=0 | | 1-19+g=41 |

Equations solver categories