5x^2-3x+18=0

Simple and best practice solution for 5x^2-3x+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 5x^2-3x+18=0 equation:


Simplifying
5x2 + -3x + 18 = 0

Reorder the terms:
18 + -3x + 5x2 = 0

Solving
18 + -3x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
3.6 + -0.6x + x2 = 0

Move the constant term to the right:

Add '-3.6' to each side of the equation.
3.6 + -0.6x + -3.6 + x2 = 0 + -3.6

Reorder the terms:
3.6 + -3.6 + -0.6x + x2 = 0 + -3.6

Combine like terms: 3.6 + -3.6 = 0.0
0.0 + -0.6x + x2 = 0 + -3.6
-0.6x + x2 = 0 + -3.6

Combine like terms: 0 + -3.6 = -3.6
-0.6x + x2 = -3.6

The x term is -0.6x.  Take half its coefficient (-0.3).
Square it (0.09) and add it to both sides.

Add '0.09' to each side of the equation.
-0.6x + 0.09 + x2 = -3.6 + 0.09

Reorder the terms:
0.09 + -0.6x + x2 = -3.6 + 0.09

Combine like terms: -3.6 + 0.09 = -3.51
0.09 + -0.6x + x2 = -3.51

Factor a perfect square on the left side:
(x + -0.3)(x + -0.3) = -3.51

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 3x+3/2=9/8 | | y=9x^2-16 | | u/2-16=28 | | 27=u/3+12 | | 3x-6+2=8x+20-5x | | 28=2w+8 | | -6x=1+3x | | 3y^4=28y^2-9 | | 6x=1+3x | | x^2+8x+y^2+6y=0 | | t/(t+9)+3=15/(t+9) | | 4p^2+5p-279=0 | | 4x^2+5p-279=0 | | 2.5+x=5+y | | -16+2x=-2+3x | | 15+45=60 | | 5(2m-2)=15 | | 4x^3-144=0 | | z^2+(3+4i)z-1+5i=0 | | 6x+6/6=4 | | 2y^2+4y+3=0 | | 5x-90=80 | | 30+(-57)= | | -5(2a-1)-(-11a+6)=7 | | 173-7=20x+20 | | 5k^(2/7)(7k^(3/7)+4k^(6/7))=0 | | -1/8+1/2 | | (7k-42)/(12-2k) | | 10x-6=14x+14 | | 5*3x=39 | | -3x^(1/3)=0 | | -2+2=-4b+-6+5b |

Equations solver categories