.45=.0021x^2-.286x+16.28

Simple and best practice solution for .45=.0021x^2-.286x+16.28 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 .45=.0021x^2-.286x+16.28 equation: 


Simplifying
0.45 = 0.0021x2 + -0.286x + 16.28

Reorder the terms:
0.45 = 16.28 + -0.286x + 0.0021x2

Solving
0.45 = 16.28 + -0.286x + 0.0021x2

Solving for variable 'x'.

Combine like terms: 0.45 + -16.28 = -15.83
-15.83 + 0.286x + -0.0021x2 = 16.28 + -0.286x + 0.0021x2 + -16.28 + 0.286x + -0.0021x2

Reorder the terms:
-15.83 + 0.286x + -0.0021x2 = 16.28 + -16.28 + -0.286x + 0.286x + 0.0021x2 + -0.0021x2

Combine like terms: 16.28 + -16.28 = 0.00
-15.83 + 0.286x + -0.0021x2 = 0.00 + -0.286x + 0.286x + 0.0021x2 + -0.0021x2
-15.83 + 0.286x + -0.0021x2 = -0.286x + 0.286x + 0.0021x2 + -0.0021x2

Combine like terms: -0.286x + 0.286x = 0.000
-15.83 + 0.286x + -0.0021x2 = 0.000 + 0.0021x2 + -0.0021x2
-15.83 + 0.286x + -0.0021x2 = 0.0021x2 + -0.0021x2

Combine like terms: 0.0021x2 + -0.0021x2 = 0.0000
-15.83 + 0.286x + -0.0021x2 = 0.0000

Begin completing the square.  Divide all terms by
-0.0021 the coefficient of the squared term: 

Divide each side by '-0.0021'.
7538.095238 + -136.1904762x + x2 = 0

Move the constant term to the right:

Add '-7538.095238' to each side of the equation.
7538.095238 + -136.1904762x + -7538.095238 + x2 = 0 + -7538.095238

Reorder the terms:
7538.095238 + -7538.095238 + -136.1904762x + x2 = 0 + -7538.095238

Combine like terms: 7538.095238 + -7538.095238 = 0.000000
0.000000 + -136.1904762x + x2 = 0 + -7538.095238
-136.1904762x + x2 = 0 + -7538.095238

Combine like terms: 0 + -7538.095238 = -7538.095238
-136.1904762x + x2 = -7538.095238

The x term is -136.1904762x.  Take half its coefficient (-68.0952381).
Square it (4636.961452) and add it to both sides.

Add '4636.961452' to each side of the equation.
-136.1904762x + 4636.961452 + x2 = -7538.095238 + 4636.961452

Reorder the terms:
4636.961452 + -136.1904762x + x2 = -7538.095238 + 4636.961452

Combine like terms: -7538.095238 + 4636.961452 = -2901.133786
4636.961452 + -136.1904762x + x2 = -2901.133786

Factor a perfect square on the left side:
(x + -68.0952381)(x + -68.0952381) = -2901.133786

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 45x^3/2 | | 12x^2+5x-123=0 | | X*4+7=31 | | c+0.25*c=3.75 | | 9z-z=-1+2z-1-4 | | 11-1/9d=-45 | | x^2-5x+25/4 | | x^2+x-233=0 | | 45=.0021x^2-.286x+16.28 | | 8-1/7v=-19 | | -1/2(6+12x) | | 7x-3y=-6 | | -15/x-3=-10/x | | 905=5x | | 500=249+9x | | h/28-4/7=5/7 | | 4(x-5)=x/2 | | (-1/2w)-(3/5)=(1/5W) | | -3(x-8)=-6x+5+7 | | a(x-3)=7x-21 | | 2(x+a)=2x+10 | | 2/3x-5/3=8 | | t/3+2-6 | | 160=17t^2-130t | | 2(3x-b)=dx-12 | | 2k^2+5k=9 | | 4x^2=15x | | -2+15/(-3)*4/5+6 | | 1/4X+9=14 | | b(2x+5)=6x+c | | 0.75/0.15x1.5 | | 3x+2xy=64 |

Equations solver categories