x^2+40x-60=0

Simple and best practice solution for x^2+40x-60=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 x^2+40x-60=0 equation:


Simplifying
x2 + 40x + -60 = 0

Reorder the terms:
-60 + 40x + x2 = 0

Solving
-60 + 40x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '60' to each side of the equation.
-60 + 40x + 60 + x2 = 0 + 60

Reorder the terms:
-60 + 60 + 40x + x2 = 0 + 60

Combine like terms: -60 + 60 = 0
0 + 40x + x2 = 0 + 60
40x + x2 = 0 + 60

Combine like terms: 0 + 60 = 60
40x + x2 = 60

The x term is 40x.  Take half its coefficient (20).
Square it (400) and add it to both sides.

Add '400' to each side of the equation.
40x + 400 + x2 = 60 + 400

Reorder the terms:
400 + 40x + x2 = 60 + 400

Combine like terms: 60 + 400 = 460
400 + 40x + x2 = 460

Factor a perfect square on the left side:
(x + 20)(x + 20) = 460

Calculate the square root of the right side: 21.44761059

Break this problem into two subproblems by setting 
(x + 20) equal to 21.44761059 and -21.44761059.

Subproblem 1

x + 20 = 21.44761059 Simplifying x + 20 = 21.44761059 Reorder the terms: 20 + x = 21.44761059 Solving 20 + x = 21.44761059 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + x = 21.44761059 + -20 Combine like terms: 20 + -20 = 0 0 + x = 21.44761059 + -20 x = 21.44761059 + -20 Combine like terms: 21.44761059 + -20 = 1.44761059 x = 1.44761059 Simplifying x = 1.44761059

Subproblem 2

x + 20 = -21.44761059 Simplifying x + 20 = -21.44761059 Reorder the terms: 20 + x = -21.44761059 Solving 20 + x = -21.44761059 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + x = -21.44761059 + -20 Combine like terms: 20 + -20 = 0 0 + x = -21.44761059 + -20 x = -21.44761059 + -20 Combine like terms: -21.44761059 + -20 = -41.44761059 x = -41.44761059 Simplifying x = -41.44761059

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.44761059, -41.44761059}

See similar equations:

| 3b-45=6 | | (0.2-x)/x=1.76 | | 3(g-5)=2g+5 | | 150x/100x=5000 | | 3/7(-1/9) | | 4(x-5)+28=2x | | .3x=180 | | -5r+1=-17 | | 5x-1-2=-12 | | 19=13x-85 | | 11-(-27)=902 | | -4.6-6x-2.8-2x=-7x-4.4 | | 4(3a-1)=5(4a-1)-4(3a+2) | | x+5=6x-2y | | 22a-22=-4(1a-4a) | | -n-5n=6 | | 8/17÷34/72 | | 116=0.90Y | | 12r-4r+7= | | 34/72= | | 3p^3+p^2+21p+7=0 | | x-27-5x=13 | | 100=.75x-(750+.25x) | | 6m+1=1-23 | | 2x+x+(x-15000)= | | 9(x+1)-3=4x+5(2+x) | | 8+4h+1-h= | | 8b^3-5b^2+8b-5=0 | | 2x+3x+8x=65 | | 2/3-2/7 | | 2+x=6x+-16 | | 5+h=7 |

Equations solver categories