40x^2+x-4000=0

Simple and best practice solution for 40x^2+x-4000=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 40x^2+x-4000=0 equation:


Simplifying
40x2 + x + -4000 = 0

Reorder the terms:
-4000 + x + 40x2 = 0

Solving
-4000 + x + 40x2 = 0

Solving for variable 'x'.

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

Divide each side by '40'.
-100 + 0.025x + x2 = 0

Move the constant term to the right:

Add '100' to each side of the equation.
-100 + 0.025x + 100 + x2 = 0 + 100

Reorder the terms:
-100 + 100 + 0.025x + x2 = 0 + 100

Combine like terms: -100 + 100 = 0
0 + 0.025x + x2 = 0 + 100
0.025x + x2 = 0 + 100

Combine like terms: 0 + 100 = 100
0.025x + x2 = 100

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.025x + 0.25 + x2 = 100 + 0.25

Reorder the terms:
0.25 + 0.025x + x2 = 100 + 0.25

Combine like terms: 100 + 0.25 = 100.25
0.25 + 0.025x + x2 = 100.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 100.25

Calculate the square root of the right side: 10.012492197

Break this problem into two subproblems by setting 
(x + 0.5) equal to 10.012492197 and -10.012492197.

Subproblem 1

x + 0.5 = 10.012492197 Simplifying x + 0.5 = 10.012492197 Reorder the terms: 0.5 + x = 10.012492197 Solving 0.5 + x = 10.012492197 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 10.012492197 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 10.012492197 + -0.5 x = 10.012492197 + -0.5 Combine like terms: 10.012492197 + -0.5 = 9.512492197 x = 9.512492197 Simplifying x = 9.512492197

Subproblem 2

x + 0.5 = -10.012492197 Simplifying x + 0.5 = -10.012492197 Reorder the terms: 0.5 + x = -10.012492197 Solving 0.5 + x = -10.012492197 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -10.012492197 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -10.012492197 + -0.5 x = -10.012492197 + -0.5 Combine like terms: -10.012492197 + -0.5 = -10.512492197 x = -10.512492197 Simplifying x = -10.512492197

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.512492197, -10.512492197}

See similar equations:

| (z+5)1.2=3.6 | | (8x-1)(4x+9)=0 | | Y/2=576 | | 4x-9=3(x+2) | | -13-5.4x=-20.38 | | (6x-5)(8x+4)=0 | | 3c+7=13 | | (9x-1)(3x+6)=0 | | 2y-5(2)=-18 | | y+1=13 | | 9x^2-30x=24 | | 2x-1=6x-17 | | 5(x-8)+26=29 | | 12/3=1/6b-1 | | 9xwhat=72 | | h^2=129.25 | | 2w-2=11 | | 3y+y^2=2 | | 2v^2+8v-12=0 | | 2y-5(2)=18 | | 5(x+2)-2(x+2)=4(x+3) | | 3a+2b+7a=12ab | | 2x=-5y+4 | | x-2=-0.16x+0.33 | | 0=81x^4-16 | | 64y/16 | | 7/x=5/10 | | x-2=-0.16666666667x+0.33333333333 | | e^2=x+1 | | 2x+25=4(x+5) | | -2v-9=25 | | .75x+1-.25x=-100 |

Equations solver categories