143=x(x-4)

Simple and best practice solution for 143=x(x-4) 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 143=x(x-4) equation:


Simplifying
143 = x(x + -4)

Reorder the terms:
143 = x(-4 + x)
143 = (-4 * x + x * x)
143 = (-4x + x2)

Solving
143 = -4x + x2

Solving for variable 'x'.

Reorder the terms:
143 + 4x + -1x2 = -4x + 4x + x2 + -1x2

Combine like terms: -4x + 4x = 0
143 + 4x + -1x2 = 0 + x2 + -1x2
143 + 4x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
143 + 4x + -1x2 = 0

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

Divide each side by '-1'.
-143 + -4x + x2 = 0

Move the constant term to the right:

Add '143' to each side of the equation.
-143 + -4x + 143 + x2 = 0 + 143

Reorder the terms:
-143 + 143 + -4x + x2 = 0 + 143

Combine like terms: -143 + 143 = 0
0 + -4x + x2 = 0 + 143
-4x + x2 = 0 + 143

Combine like terms: 0 + 143 = 143
-4x + x2 = 143

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = 143 + 4

Reorder the terms:
4 + -4x + x2 = 143 + 4

Combine like terms: 143 + 4 = 147
4 + -4x + x2 = 147

Factor a perfect square on the left side:
(x + -2)(x + -2) = 147

Calculate the square root of the right side: 12.124355653

Break this problem into two subproblems by setting 
(x + -2) equal to 12.124355653 and -12.124355653.

Subproblem 1

x + -2 = 12.124355653 Simplifying x + -2 = 12.124355653 Reorder the terms: -2 + x = 12.124355653 Solving -2 + x = 12.124355653 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 12.124355653 + 2 Combine like terms: -2 + 2 = 0 0 + x = 12.124355653 + 2 x = 12.124355653 + 2 Combine like terms: 12.124355653 + 2 = 14.124355653 x = 14.124355653 Simplifying x = 14.124355653

Subproblem 2

x + -2 = -12.124355653 Simplifying x + -2 = -12.124355653 Reorder the terms: -2 + x = -12.124355653 Solving -2 + x = -12.124355653 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -12.124355653 + 2 Combine like terms: -2 + 2 = 0 0 + x = -12.124355653 + 2 x = -12.124355653 + 2 Combine like terms: -12.124355653 + 2 = -10.124355653 x = -10.124355653 Simplifying x = -10.124355653

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.124355653, -10.124355653}

See similar equations:

| 3y=-8x+152.5 | | 2x-x(-54-2y)=128 | | -19y=-883 | | 31x-17=180 | | 3x-13=27+x | | d/5-2= | | Wsquared+3w=11 | | (6x+5)(4x+7)= | | 2/(x^2-9) | | 7x^2-8x=1 | | 87-j=28 | | -39-4x=13-8x | | 2x+e=4 | | 5x^2-100=25 | | 2y-4y=x+1 | | -20+4x=10+x | | x^2+ax+bx+ab=56 | | 19-2n=-17-5n | | 24-2q=6 | | (1,-1)m=-2/3 | | 2y-4y=0.5+0.5 | | 5c-19=6c | | 4x-6+x+9=180 | | -18j-3=-8-2-11j | | v/2=10 | | .56x=x-20 | | 4(y-7)=2*(2y+41) | | -10-5h=-3h+10 | | 5/3x=-15/7 | | c=12x+4 | | 8-4b=-2b | | 3/5x-6=7.2 |

Equations solver categories