20x^2+9x+18=0

Simple and best practice solution for 20x^2+9x+18=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 20x^2+9x+18=0 equation:


Simplifying
20x2 + 9x + 18 = 0

Reorder the terms:
18 + 9x + 20x2 = 0

Solving
18 + 9x + 20x2 = 0

Solving for variable 'x'.

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

Divide each side by '20'.
0.9 + 0.45x + x2 = 0

Move the constant term to the right:

Add '-0.9' to each side of the equation.
0.9 + 0.45x + -0.9 + x2 = 0 + -0.9

Reorder the terms:
0.9 + -0.9 + 0.45x + x2 = 0 + -0.9

Combine like terms: 0.9 + -0.9 = 0.0
0.0 + 0.45x + x2 = 0 + -0.9
0.45x + x2 = 0 + -0.9

Combine like terms: 0 + -0.9 = -0.9
0.45x + x2 = -0.9

The x term is 0.45x.  Take half its coefficient (0.225).
Square it (0.050625) and add it to both sides.

Add '0.050625' to each side of the equation.
0.45x + 0.050625 + x2 = -0.9 + 0.050625

Reorder the terms:
0.050625 + 0.45x + x2 = -0.9 + 0.050625

Combine like terms: -0.9 + 0.050625 = -0.849375
0.050625 + 0.45x + x2 = -0.849375

Factor a perfect square on the left side:
(x + 0.225)(x + 0.225) = -0.849375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| -2n^2-14n+16=0 | | -2x^2-8x+16=0 | | 2(m-l)=5 | | 4x^4-18x^3+19x^2+4=0 | | 4x^3-10x^2-x-2=0 | | 7p*6= | | 6*sin*(4t)=3 | | 3x=-ln(2) | | 3x=ln(2) | | (1/2401)1/4 | | 6sin(4t)=3 | | 1.35x+x= | | 32-12y+12y=8 | | 59=2x+10+4x-17 | | 5*-3=12 | | 5v^2+13v+6=0 | | 3-2x=5-7y | | Y-8=3x+4 | | 7/56//5/x | | 3x+y+6=9 | | Y-13=2x+4 | | 8-2x+6=0 | | 6a+4=7a-a | | 27500=11x | | 27500/11=x | | 27500/11=0 | | 10n-5=-5 | | 3x*678= | | X=100-1/2x | | 1000-998= | | 9x-2+12x+18=180 | | 9x-2=10x+2 |

Equations solver categories