(x+1)(x+3)=72x

Simple and best practice solution for (x+1)(x+3)=72x 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+1)(x+3)=72x equation:


Simplifying
(x + 1)(x + 3) = 72x

Reorder the terms:
(1 + x)(x + 3) = 72x

Reorder the terms:
(1 + x)(3 + x) = 72x

Multiply (1 + x) * (3 + x)
(1(3 + x) + x(3 + x)) = 72x
((3 * 1 + x * 1) + x(3 + x)) = 72x
((3 + 1x) + x(3 + x)) = 72x
(3 + 1x + (3 * x + x * x)) = 72x
(3 + 1x + (3x + x2)) = 72x

Combine like terms: 1x + 3x = 4x
(3 + 4x + x2) = 72x

Solving
3 + 4x + x2 = 72x

Solving for variable 'x'.

Reorder the terms:
3 + 4x + -72x + x2 = 72x + -72x

Combine like terms: 4x + -72x = -68x
3 + -68x + x2 = 72x + -72x

Combine like terms: 72x + -72x = 0
3 + -68x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + -68x + -3 + x2 = 0 + -3

Reorder the terms:
3 + -3 + -68x + x2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -68x + x2 = 0 + -3
-68x + x2 = 0 + -3

Combine like terms: 0 + -3 = -3
-68x + x2 = -3

The x term is -68x.  Take half its coefficient (-34).
Square it (1156) and add it to both sides.

Add '1156' to each side of the equation.
-68x + 1156 + x2 = -3 + 1156

Reorder the terms:
1156 + -68x + x2 = -3 + 1156

Combine like terms: -3 + 1156 = 1153
1156 + -68x + x2 = 1153

Factor a perfect square on the left side:
(x + -34)(x + -34) = 1153

Calculate the square root of the right side: 33.955853693

Break this problem into two subproblems by setting 
(x + -34) equal to 33.955853693 and -33.955853693.

Subproblem 1

x + -34 = 33.955853693 Simplifying x + -34 = 33.955853693 Reorder the terms: -34 + x = 33.955853693 Solving -34 + x = 33.955853693 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '34' to each side of the equation. -34 + 34 + x = 33.955853693 + 34 Combine like terms: -34 + 34 = 0 0 + x = 33.955853693 + 34 x = 33.955853693 + 34 Combine like terms: 33.955853693 + 34 = 67.955853693 x = 67.955853693 Simplifying x = 67.955853693

Subproblem 2

x + -34 = -33.955853693 Simplifying x + -34 = -33.955853693 Reorder the terms: -34 + x = -33.955853693 Solving -34 + x = -33.955853693 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '34' to each side of the equation. -34 + 34 + x = -33.955853693 + 34 Combine like terms: -34 + 34 = 0 0 + x = -33.955853693 + 34 x = -33.955853693 + 34 Combine like terms: -33.955853693 + 34 = 0.044146307 x = 0.044146307 Simplifying x = 0.044146307

Solution

The solution to the problem is based on the solutions from the subproblems. x = {67.955853693, 0.044146307}

See similar equations:

| (x+11)= | | m+(-16)=32 | | y+(-4)=-51 | | 2y^2+24y+12=y^2+32y-3 | | 0.25(x+4)=25 | | 17=b+4 | | 120t=3 | | k+18=-9 | | 4a(3a+15)= | | X(x+1)(x+3)=72 | | 2x^2-30x+a=0 | | z+3.7=2.4 | | 2x-4.8=-2.6 | | 7y^2-3y-2=-5y | | 53+3x=14x-3 | | .75(8x-12)=5x-2 | | -6=y+(-7) | | 4(5n+1)=-2(4n+1)-8 | | 12x+60=15x+15 | | r+(-21)=43 | | y+(-19)=0 | | 2y^2-9y=0 | | x^4+18x^2+32*x-19=0 | | 6x-2x+14=12+x-7 | | 2x+x-3=17 | | A=0.5ha+0.5hb | | 4+p=-11 | | 4.78x+100=22.8484+10x | | q+12=-23 | | 5x-23=19-9x | | 5(2s+11)=5(s+2) | | x^2+6xy+8y^2+3x+6y=2 |

Equations solver categories