x^2+2x+16=36

Simple and best practice solution for x^2+2x+16=36 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+2x+16=36 equation:


Simplifying
x2 + 2x + 16 = 36

Reorder the terms:
16 + 2x + x2 = 36

Solving
16 + 2x + x2 = 36

Solving for variable 'x'.

Reorder the terms:
16 + -36 + 2x + x2 = 36 + -36

Combine like terms: 16 + -36 = -20
-20 + 2x + x2 = 36 + -36

Combine like terms: 36 + -36 = 0
-20 + 2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '20' to each side of the equation.
-20 + 2x + 20 + x2 = 0 + 20

Reorder the terms:
-20 + 20 + 2x + x2 = 0 + 20

Combine like terms: -20 + 20 = 0
0 + 2x + x2 = 0 + 20
2x + x2 = 0 + 20

Combine like terms: 0 + 20 = 20
2x + x2 = 20

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 = 20 + 1

Reorder the terms:
1 + 2x + x2 = 20 + 1

Combine like terms: 20 + 1 = 21
1 + 2x + x2 = 21

Factor a perfect square on the left side:
(x + 1)(x + 1) = 21

Calculate the square root of the right side: 4.582575695

Break this problem into two subproblems by setting 
(x + 1) equal to 4.582575695 and -4.582575695.

Subproblem 1

x + 1 = 4.582575695 Simplifying x + 1 = 4.582575695 Reorder the terms: 1 + x = 4.582575695 Solving 1 + x = 4.582575695 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 = 4.582575695 + -1 Combine like terms: 1 + -1 = 0 0 + x = 4.582575695 + -1 x = 4.582575695 + -1 Combine like terms: 4.582575695 + -1 = 3.582575695 x = 3.582575695 Simplifying x = 3.582575695

Subproblem 2

x + 1 = -4.582575695 Simplifying x + 1 = -4.582575695 Reorder the terms: 1 + x = -4.582575695 Solving 1 + x = -4.582575695 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 = -4.582575695 + -1 Combine like terms: 1 + -1 = 0 0 + x = -4.582575695 + -1 x = -4.582575695 + -1 Combine like terms: -4.582575695 + -1 = -5.582575695 x = -5.582575695 Simplifying x = -5.582575695

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.582575695, -5.582575695}

See similar equations:

| a=3.14*380.13 | | 3x+22=4x+12 | | 2(y+5)+9(y-4)+7= | | 20x-20x=x | | x(7+3)=67 | | 5u-5=-10 | | 7sinx=2 | | 5b+4b=1 | | .70x+.05(10-x)=.10(33) | | (-p^3+4p^2-5p-1)-(-5p^3-4p+3)= | | (3x^2+x-4)(2x-5)= | | 9y^2-234y+189=0 | | (5x-6)=3x | | 4Q+6=12-2Q | | .70x+.05(2-x)=.10(92) | | d^2-3d+2=8d+3 | | 10x-4=20x-24 | | 7x-7=-3x+3 | | (5y-8)(4+y)=0 | | (5y-0)(4+y)=0 | | .5x-5.7=3.2 | | 35+29=29+35 | | 3x-2=5x+18 | | Y=8x+17 | | h^2-k^2= | | -0.25a+3.8= | | x+ay+1=0 | | 7(5-2m)-m=25 | | 3x-7=-x-4 | | n+11=15-8n | | 16y^6+10y^3= | | 6a+3-5+4a= |

Equations solver categories