9x^2+18x+79=0

Simple and best practice solution for 9x^2+18x+79=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 9x^2+18x+79=0 equation:


Simplifying
9x2 + 18x + 79 = 0

Reorder the terms:
79 + 18x + 9x2 = 0

Solving
79 + 18x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
8.777777778 + 2x + x2 = 0

Move the constant term to the right:

Add '-8.777777778' to each side of the equation.
8.777777778 + 2x + -8.777777778 + x2 = 0 + -8.777777778

Reorder the terms:
8.777777778 + -8.777777778 + 2x + x2 = 0 + -8.777777778

Combine like terms: 8.777777778 + -8.777777778 = 0.000000000
0.000000000 + 2x + x2 = 0 + -8.777777778
2x + x2 = 0 + -8.777777778

Combine like terms: 0 + -8.777777778 = -8.777777778
2x + x2 = -8.777777778

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

Add '1' to each side of the equation.
2x + 1 + x2 = -8.777777778 + 1

Reorder the terms:
1 + 2x + x2 = -8.777777778 + 1

Combine like terms: -8.777777778 + 1 = -7.777777778
1 + 2x + x2 = -7.777777778

Factor a perfect square on the left side:
(x + 1)(x + 1) = -7.777777778

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 4x-3=4(x-4) | | k/4+2=7 | | 2r+12-12=100-12 | | 0=3x^2+16+15 | | 4(5x-2)=20x-8 | | 5m+4m+3m=24 | | 7/4h=1/4h-12 | | 4t^2-3t-10=0 | | 2x+3y+1/2-6-1/2x-y=0 | | .2x+.15(70)=25.5 | | 4t^2+29t+7=0 | | 5-6x=-70 | | -144+6x+9x=126 | | 4/x=x/8 | | -1=5/6x | | -1/3*3 | | (1/4)^0 | | (1/4)^-1 | | 8/3+x=5/3x | | 0=-3x^2-26x-15 | | 5-6x=70 | | N/4=16 | | 1/(2x+10)=8/(x^2-25)-2/(x-5) | | 40x+2x(3)=414 | | (x-2)/(x-4)=2/(x-4) | | X-15=5x-7 | | 5x+4=5x | | 4*3+5y=17 | | 7x+2x=7 | | 12(x-1)-3x+2=-2+x | | ln(y+1)=6+x | | X^5-15x^3+56x=0 |

Equations solver categories