(x)(x+2)=16

Simple and best practice solution for (x)(x+2)=16 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+2)=16 equation:


Simplifying
(x)(x + 2) = 16

Reorder the terms:
x(2 + x) = 16
(2 * x + x * x) = 16
(2x + x2) = 16

Solving
2x + x2 = 16

Solving for variable 'x'.

Reorder the terms:
-16 + 2x + x2 = 16 + -16

Combine like terms: 16 + -16 = 0
-16 + 2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '16' to each side of the equation.
-16 + 2x + 16 + x2 = 0 + 16

Reorder the terms:
-16 + 16 + 2x + x2 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + 2x + x2 = 0 + 16
2x + x2 = 0 + 16

Combine like terms: 0 + 16 = 16
2x + x2 = 16

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 16 + 1

Reorder the terms:
1 + 2x + x2 = 16 + 1

Combine like terms: 16 + 1 = 17
1 + 2x + x2 = 17

Factor a perfect square on the left side:
(x + 1)(x + 1) = 17

Calculate the square root of the right side: 4.123105626

Break this problem into two subproblems by setting 
(x + 1) equal to 4.123105626 and -4.123105626.

Subproblem 1

x + 1 = 4.123105626 Simplifying x + 1 = 4.123105626 Reorder the terms: 1 + x = 4.123105626 Solving 1 + x = 4.123105626 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 4.123105626 + -1 Combine like terms: 1 + -1 = 0 0 + x = 4.123105626 + -1 x = 4.123105626 + -1 Combine like terms: 4.123105626 + -1 = 3.123105626 x = 3.123105626 Simplifying x = 3.123105626

Subproblem 2

x + 1 = -4.123105626 Simplifying x + 1 = -4.123105626 Reorder the terms: 1 + x = -4.123105626 Solving 1 + x = -4.123105626 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -4.123105626 + -1 Combine like terms: 1 + -1 = 0 0 + x = -4.123105626 + -1 x = -4.123105626 + -1 Combine like terms: -4.123105626 + -1 = -5.123105626 x = -5.123105626 Simplifying x = -5.123105626

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.123105626, -5.123105626}

See similar equations:

| 4(-1)(-1-0.25)= | | x^3-13x+13=0 | | 3x-5/2x=108 | | 17+k=19 | | 4.6+x=6.5 | | 5y-2y=6y | | X/-9=69 | | 1.6(b+8)-(7.5+0.6b)=-8+7 | | 4X+5Y-3Z=-18 | | 14x-5=9x+15 | | 20a+12b+5c+5c-5b-5b-2a= | | 16q+16q+p-7q-6p= | | X/10=119 | | 100s+30=40s+50 | | 3x^3y-15x^2y+xy=0 | | X^6/7=3 | | X/-5=56 | | 5x^2+5x-8.75=0 | | 8-(x-4)=7(x-3) | | -5x-4=-1 | | m/5-4=3 | | -30x+-60+3=30 | | 5x^2+2x-8.75=0 | | 3x^2-71=-17 | | x/8=120 | | -3x+4x+10-8=14 | | 8(5x-4)=50 | | 30+80x=2.30x | | x-7/2≥4 | | 9x+31=-21+3x | | 195=2-x | | (x-1)2=0.5 |

Equations solver categories