x(3-x)=-3

Simple and best practice solution for x(3-x)=-3 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 x(3-x)=-3 equation:


Simplifying
x(3 + -1x) = -3
(3 * x + -1x * x) = -3
(3x + -1x2) = -3

Solving
3x + -1x2 = -3

Solving for variable 'x'.

Reorder the terms:
3 + 3x + -1x2 = -3 + 3

Combine like terms: -3 + 3 = 0
3 + 3x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-3 + -3x + x2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -3x + 3 + x2 = 0 + 3

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

Combine like terms: -3 + 3 = 0
0 + -3x + x2 = 0 + 3
-3x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
-3x + x2 = 3

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 3 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 3 + 2.25

Combine like terms: 3 + 2.25 = 5.25
2.25 + -3x + x2 = 5.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 5.25

Calculate the square root of the right side: 2.291287847

Break this problem into two subproblems by setting 
(x + -1.5) equal to 2.291287847 and -2.291287847.

Subproblem 1

x + -1.5 = 2.291287847 Simplifying x + -1.5 = 2.291287847 Reorder the terms: -1.5 + x = 2.291287847 Solving -1.5 + x = 2.291287847 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 2.291287847 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 2.291287847 + 1.5 x = 2.291287847 + 1.5 Combine like terms: 2.291287847 + 1.5 = 3.791287847 x = 3.791287847 Simplifying x = 3.791287847

Subproblem 2

x + -1.5 = -2.291287847 Simplifying x + -1.5 = -2.291287847 Reorder the terms: -1.5 + x = -2.291287847 Solving -1.5 + x = -2.291287847 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -2.291287847 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -2.291287847 + 1.5 x = -2.291287847 + 1.5 Combine like terms: -2.291287847 + 1.5 = -0.791287847 x = -0.791287847 Simplifying x = -0.791287847

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.791287847, -0.791287847}

See similar equations:

| 3x-8y*8y=18x | | 5p-(p/6)-3=(p/3)-5p+3 | | 7/15x=70 | | X^3-4x=3x^2+2x-8 | | -4y=-37 | | 3x*4x=1014 | | -2.4-4y-3.7-2y=-5y-0.1 | | 2x-5(2-x)=0 | | 6(w-1)=5(w-5) | | 6(n+1)-(9-2n)=7n | | 27x^6+8y^9= | | 2/3x+3=-1/3x-3 | | t/9*18=5/6*18 | | 0.864/0.024 | | 2/3x+7=-1/3x-6 | | -8x+3=13 | | 5z+2=5z-z | | 3*5-5x+y*5/3*(-8x^2) | | 4x^2-29x+44=0 | | g^2-10g-39=0 | | 3y+4y=6y+6 | | 52+0.8*13=62 | | X+5=4x^2-28x+49 | | X-5=4x^2+49 | | (2w-7)(w+4)=0 | | 3x+2=2(x-5)+6 | | 65-5x=8x+23 | | X-5=4x^2-49 | | 3b-(b/3)-4=(b/4)-3b+4 | | 4y+6=3y-5 | | cosx=0.5 | | 4*5/2-3*0+10=0 |

Equations solver categories