x(x+40)=180

Simple and best practice solution for x(x+40)=180 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(x+40)=180 equation:


Simplifying
x(x + 40) = 180

Reorder the terms:
x(40 + x) = 180
(40 * x + x * x) = 180
(40x + x2) = 180

Solving
40x + x2 = 180

Solving for variable 'x'.

Reorder the terms:
-180 + 40x + x2 = 180 + -180

Combine like terms: 180 + -180 = 0
-180 + 40x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '180' to each side of the equation.
-180 + 40x + 180 + x2 = 0 + 180

Reorder the terms:
-180 + 180 + 40x + x2 = 0 + 180

Combine like terms: -180 + 180 = 0
0 + 40x + x2 = 0 + 180
40x + x2 = 0 + 180

Combine like terms: 0 + 180 = 180
40x + x2 = 180

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 = 180 + 400

Reorder the terms:
400 + 40x + x2 = 180 + 400

Combine like terms: 180 + 400 = 580
400 + 40x + x2 = 580

Factor a perfect square on the left side:
(x + 20)(x + 20) = 580

Calculate the square root of the right side: 24.083189158

Break this problem into two subproblems by setting 
(x + 20) equal to 24.083189158 and -24.083189158.

Subproblem 1

x + 20 = 24.083189158 Simplifying x + 20 = 24.083189158 Reorder the terms: 20 + x = 24.083189158 Solving 20 + x = 24.083189158 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 = 24.083189158 + -20 Combine like terms: 20 + -20 = 0 0 + x = 24.083189158 + -20 x = 24.083189158 + -20 Combine like terms: 24.083189158 + -20 = 4.083189158 x = 4.083189158 Simplifying x = 4.083189158

Subproblem 2

x + 20 = -24.083189158 Simplifying x + 20 = -24.083189158 Reorder the terms: 20 + x = -24.083189158 Solving 20 + x = -24.083189158 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 = -24.083189158 + -20 Combine like terms: 20 + -20 = 0 0 + x = -24.083189158 + -20 x = -24.083189158 + -20 Combine like terms: -24.083189158 + -20 = -44.083189158 x = -44.083189158 Simplifying x = -44.083189158

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.083189158, -44.083189158}

See similar equations:

| 6p+5[3(2-3p)-2(5-4p)]= | | -42=7(8-x) | | (3x-5)+(6x-40)=90 | | (3x-5)+(6x-40)= | | -7x+10=10-7x | | 4a^2-17a-15=0 | | -5y^2+8y+7=0 | | 45/6b+4111/140=4/5b-22/5+11/7 | | 8x(9x)= | | x=(x+40) | | =2+2sin(i) | | 3(2m-1)+9=6(1m+1) | | 12+9g=93 | | =2+2sinx | | -8(x+8)= | | 6(x-4)=40 | | -2a+13/5=24/5-14/5a | | 4.2p+17=3.2p+2 | | 4x^2-13x-116=0 | | -9.2=y+7.7 | | 13.75=0.25+0.50 | | 21.6+4.4t=5.32 | | 5x(-4x+4)=1 | | 18+9p12p-31= | | -13=2.7x-1.35x | | 16.331+m=38.478 | | 9g-47g-3= | | 24577=x-76x | | f(x)=8ln(x) | | 4x+2(7x+11)=112 | | 2b-6b+3= | | 13y-22y=12 |

Equations solver categories