(9+x)(13+x)=135

Simple and best practice solution for (9+x)(13+x)=135 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 (9+x)(13+x)=135 equation:


Simplifying
(9 + x)(13 + x) = 135

Multiply (9 + x) * (13 + x)
(9(13 + x) + x(13 + x)) = 135
((13 * 9 + x * 9) + x(13 + x)) = 135
((117 + 9x) + x(13 + x)) = 135
(117 + 9x + (13 * x + x * x)) = 135
(117 + 9x + (13x + x2)) = 135

Combine like terms: 9x + 13x = 22x
(117 + 22x + x2) = 135

Solving
117 + 22x + x2 = 135

Solving for variable 'x'.

Reorder the terms:
117 + -135 + 22x + x2 = 135 + -135

Combine like terms: 117 + -135 = -18
-18 + 22x + x2 = 135 + -135

Combine like terms: 135 + -135 = 0
-18 + 22x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '18' to each side of the equation.
-18 + 22x + 18 + x2 = 0 + 18

Reorder the terms:
-18 + 18 + 22x + x2 = 0 + 18

Combine like terms: -18 + 18 = 0
0 + 22x + x2 = 0 + 18
22x + x2 = 0 + 18

Combine like terms: 0 + 18 = 18
22x + x2 = 18

The x term is 22x.  Take half its coefficient (11).
Square it (121) and add it to both sides.

Add '121' to each side of the equation.
22x + 121 + x2 = 18 + 121

Reorder the terms:
121 + 22x + x2 = 18 + 121

Combine like terms: 18 + 121 = 139
121 + 22x + x2 = 139

Factor a perfect square on the left side:
(x + 11)(x + 11) = 139

Calculate the square root of the right side: 11.789826123

Break this problem into two subproblems by setting 
(x + 11) equal to 11.789826123 and -11.789826123.

Subproblem 1

x + 11 = 11.789826123 Simplifying x + 11 = 11.789826123 Reorder the terms: 11 + x = 11.789826123 Solving 11 + x = 11.789826123 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + x = 11.789826123 + -11 Combine like terms: 11 + -11 = 0 0 + x = 11.789826123 + -11 x = 11.789826123 + -11 Combine like terms: 11.789826123 + -11 = 0.789826123 x = 0.789826123 Simplifying x = 0.789826123

Subproblem 2

x + 11 = -11.789826123 Simplifying x + 11 = -11.789826123 Reorder the terms: 11 + x = -11.789826123 Solving 11 + x = -11.789826123 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + x = -11.789826123 + -11 Combine like terms: 11 + -11 = 0 0 + x = -11.789826123 + -11 x = -11.789826123 + -11 Combine like terms: -11.789826123 + -11 = -22.789826123 x = -22.789826123 Simplifying x = -22.789826123

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.789826123, -22.789826123}

See similar equations:

| 1+6(8x-9)=8x+27 | | 4b-6a=13 | | 4(9x-8)=43 | | W+-6w-7w=-18 | | -5-3y=-77+9y | | -14w+15w=11 | | 25+25+5q+5q+5q+5q= | | 2p+5p-2p=20 | | 15c-11c-3c=10 | | 29+6=-a-8 | | 3(y+7)=-9y-39 | | g-g+g+g=18 | | -24x+70=-2x^2 | | P-5/6=3/8 | | P-5/6=5/8 | | cos(2x)-senx=0 | | 9(z+5)=8(z-3)+z | | 29+6=a-8 | | 9-9+9+9=18 | | 4(b-80)+79=87 | | -3d+-d=16 | | 2(5(3))+2(6(3))=66 | | X+x+38=110 | | 29+6=a-9 | | 6a+2a-6a-2a+a=18 | | -3x+8x=6(x+2)-(x+12) | | 2(5x)+2(6x)=66 | | Y=go+m | | lnx+ln(x+6)=2 | | 2(5x)*2(6x)=66 | | -6(5n+7)=10n | | 4+3t-(3t+8)-(3t+6)= |

Equations solver categories