x*(40+0.5625*x)=200

Simple and best practice solution for x*(40+0.5625*x)=200 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*(40+0.5625*x)=200 equation:


Simplifying
x(40 + 0.5625x) = 200
(40 * x + 0.5625x * x) = 200
(40x + 0.5625x2) = 200

Solving
40x + 0.5625x2 = 200

Solving for variable 'x'.

Reorder the terms:
-200 + 40x + 0.5625x2 = 200 + -200

Combine like terms: 200 + -200 = 0
-200 + 40x + 0.5625x2 = 0

Begin completing the square.  Divide all terms by
0.5625 the coefficient of the squared term: 

Divide each side by '0.5625'.
-355.5555556 + 71.11111111x + x2 = 0

Move the constant term to the right:

Add '355.5555556' to each side of the equation.
-355.5555556 + 71.11111111x + 355.5555556 + x2 = 0 + 355.5555556

Reorder the terms:
-355.5555556 + 355.5555556 + 71.11111111x + x2 = 0 + 355.5555556

Combine like terms: -355.5555556 + 355.5555556 = 0.0000000
0.0000000 + 71.11111111x + x2 = 0 + 355.5555556
71.11111111x + x2 = 0 + 355.5555556

Combine like terms: 0 + 355.5555556 = 355.5555556
71.11111111x + x2 = 355.5555556

The x term is 71.11111111x.  Take half its coefficient (35.55555556).
Square it (1264.197531) and add it to both sides.

Add '1264.197531' to each side of the equation.
71.11111111x + 1264.197531 + x2 = 355.5555556 + 1264.197531

Reorder the terms:
1264.197531 + 71.11111111x + x2 = 355.5555556 + 1264.197531

Combine like terms: 355.5555556 + 1264.197531 = 1619.7530866
1264.197531 + 71.11111111x + x2 = 1619.7530866

Factor a perfect square on the left side:
(x + 35.55555556)(x + 35.55555556) = 1619.7530866

Calculate the square root of the right side: 40.246156172

Break this problem into two subproblems by setting 
(x + 35.55555556) equal to 40.246156172 and -40.246156172.

Subproblem 1

x + 35.55555556 = 40.246156172 Simplifying x + 35.55555556 = 40.246156172 Reorder the terms: 35.55555556 + x = 40.246156172 Solving 35.55555556 + x = 40.246156172 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-35.55555556' to each side of the equation. 35.55555556 + -35.55555556 + x = 40.246156172 + -35.55555556 Combine like terms: 35.55555556 + -35.55555556 = 0.00000000 0.00000000 + x = 40.246156172 + -35.55555556 x = 40.246156172 + -35.55555556 Combine like terms: 40.246156172 + -35.55555556 = 4.690600612 x = 4.690600612 Simplifying x = 4.690600612

Subproblem 2

x + 35.55555556 = -40.246156172 Simplifying x + 35.55555556 = -40.246156172 Reorder the terms: 35.55555556 + x = -40.246156172 Solving 35.55555556 + x = -40.246156172 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-35.55555556' to each side of the equation. 35.55555556 + -35.55555556 + x = -40.246156172 + -35.55555556 Combine like terms: 35.55555556 + -35.55555556 = 0.00000000 0.00000000 + x = -40.246156172 + -35.55555556 x = -40.246156172 + -35.55555556 Combine like terms: -40.246156172 + -35.55555556 = -75.801711732 x = -75.801711732 Simplifying x = -75.801711732

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.690600612, -75.801711732}

See similar equations:

| y+3.6=8.1-7.2 | | x(40+0.5625*x)=200 | | 6m^2+12m-5=5+m | | 8(2h+17)=9h-14+10 | | 2(4x+2)-4x=8x+14 | | x-.6=9.2 | | 92=-7x-2(2x-2) | | (7y+7)-(6+6y)=9 | | 9(k+6)+18=-19k-9k-2 | | 8(4n+13)=6m | | 10=(6+6i)(x+yi) | | 80-x=132 | | -4x-4(-6x+10)=80 | | -16b=-3(-2b-5)-15 | | 6x^5-36x^3=0 | | 143=l*11 | | 2f-17f-19=10f+4(-9f+20) | | ax+b=2f | | 5x+125=25x+3 | | -7x+4(5x-10)=38 | | d=2(-2d-16)-18 | | 4y-1=2y+1 | | 9x-5=5x+0 | | -5x-1+2x=35 | | 3k+1=7k+11 | | 234*3= | | 2y^2-15y+27=0 | | 5*x=3455 | | 3(2x-5)=6x-9 | | 0.1+36= | | 3x=6-6(x+2)-6 | | 0.3+36= |

Equations solver categories