x^2+24x=84

Simple and best practice solution for x^2+24x=84 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+24x=84 equation:


Simplifying
x2 + 24x = 84

Reorder the terms:
24x + x2 = 84

Solving
24x + x2 = 84

Solving for variable 'x'.

Reorder the terms:
-84 + 24x + x2 = 84 + -84

Combine like terms: 84 + -84 = 0
-84 + 24x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '84' to each side of the equation.
-84 + 24x + 84 + x2 = 0 + 84

Reorder the terms:
-84 + 84 + 24x + x2 = 0 + 84

Combine like terms: -84 + 84 = 0
0 + 24x + x2 = 0 + 84
24x + x2 = 0 + 84

Combine like terms: 0 + 84 = 84
24x + x2 = 84

The x term is 24x.  Take half its coefficient (12).
Square it (144) and add it to both sides.

Add '144' to each side of the equation.
24x + 144 + x2 = 84 + 144

Reorder the terms:
144 + 24x + x2 = 84 + 144

Combine like terms: 84 + 144 = 228
144 + 24x + x2 = 228

Factor a perfect square on the left side:
(x + 12)(x + 12) = 228

Calculate the square root of the right side: 15.099668871

Break this problem into two subproblems by setting 
(x + 12) equal to 15.099668871 and -15.099668871.

Subproblem 1

x + 12 = 15.099668871 Simplifying x + 12 = 15.099668871 Reorder the terms: 12 + x = 15.099668871 Solving 12 + x = 15.099668871 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = 15.099668871 + -12 Combine like terms: 12 + -12 = 0 0 + x = 15.099668871 + -12 x = 15.099668871 + -12 Combine like terms: 15.099668871 + -12 = 3.099668871 x = 3.099668871 Simplifying x = 3.099668871

Subproblem 2

x + 12 = -15.099668871 Simplifying x + 12 = -15.099668871 Reorder the terms: 12 + x = -15.099668871 Solving 12 + x = -15.099668871 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = -15.099668871 + -12 Combine like terms: 12 + -12 = 0 0 + x = -15.099668871 + -12 x = -15.099668871 + -12 Combine like terms: -15.099668871 + -12 = -27.099668871 x = -27.099668871 Simplifying x = -27.099668871

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.099668871, -27.099668871}

See similar equations:

| 2b-5=b+4 | | -2(x+4)-2=-2(x+5) | | 4x+2+x=28 | | 4n+63=15n-36 | | (2x+3)+(2x+3)+x+x=360 | | (2x+3)+(2x+3)=360 | | 272=16t^2+32t | | 4(4+p)=20 | | 5(2x+6)=4(-3x+4) | | 7p+8=5p+2 | | 0-(2)= | | 10x+12y=3000 | | (2x+3)=360 | | 27=2y+7 | | u/v=18 | | 2x+3(15)=105 | | 7y+6y=26 | | 7x-10=56 | | y/4-13=24 | | 5b+2b=84 | | 1.3/2= | | 13x-31=41 | | 18=u+9 | | 1-0.75c= | | 4.8x+3.8x= | | (6y+3)+2y=5 | | 5x/7=0 | | 6(d+1)=12 | | 55=5(6+s) | | 3-2y=x | | 3x-51=3x+12 | | 28=5z+3 |

Equations solver categories