5x^2-3x+9=0

Simple and best practice solution for 5x^2-3x+9=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+9=0 equation:


Simplifying
5x2 + -3x + 9 = 0

Reorder the terms:
9 + -3x + 5x2 = 0

Solving
9 + -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'.
1.8 + -0.6x + x2 = 0

Move the constant term to the right:

Add '-1.8' to each side of the equation.
1.8 + -0.6x + -1.8 + x2 = 0 + -1.8

Reorder the terms:
1.8 + -1.8 + -0.6x + x2 = 0 + -1.8

Combine like terms: 1.8 + -1.8 = 0.0
0.0 + -0.6x + x2 = 0 + -1.8
-0.6x + x2 = 0 + -1.8

Combine like terms: 0 + -1.8 = -1.8
-0.6x + x2 = -1.8

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 = -1.8 + 0.09

Reorder the terms:
0.09 + -0.6x + x2 = -1.8 + 0.09

Combine like terms: -1.8 + 0.09 = -1.71
0.09 + -0.6x + x2 = -1.71

Factor a perfect square on the left side:
(x + -0.3)(x + -0.3) = -1.71

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 3(5+4x)=2(3x-5) | | 6(x-9)=-2(x-15) | | 3y^2=-y+10 | | 2a-a-21=0 | | 18z^2=18z-11 | | 1/(2x-1)-1/(2x+1)=1/4 | | 70/-9 | | 0.065(x+2000)=0.07x+0.06(2000) | | (1/2x-1)-(1/2x+1)=1/4 | | 0.2(40)=0.6(60+x)-1.0x | | 12x^2-40x+96=0 | | (x-4)(x-2)=9 | | 0.6x-0.5(5)=0.5 | | 65/25 | | 5in(4x-6)=-6 | | 5x^2+5x-20=20 | | logx(x+6)=2 | | 4t^2-t-3=0 | | -10=14x | | 1+(a+b)= | | 2x+6x^(-1/3)=0 | | 9r+8=26 | | 2d(2)-32=0 | | x^2+5x=20 | | x(x+8)+18=0 | | 5x^2+5x=20 | | 3x+5-2x+3x=17 | | 59=x-29 | | sin(6x)+sin(2x)=0 | | 24+5x=8x | | 5x^2+35x-40=0 | | 7(2x+1)=-4(x+12) |

Equations solver categories