x^2+8x+16=-18

Simple and best practice solution for x^2+8x+16=-18 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+8x+16=-18 equation:


Simplifying
x2 + 8x + 16 = -18

Reorder the terms:
16 + 8x + x2 = -18

Solving
16 + 8x + x2 = -18

Solving for variable 'x'.

Reorder the terms:
16 + 18 + 8x + x2 = -18 + 18

Combine like terms: 16 + 18 = 34
34 + 8x + x2 = -18 + 18

Combine like terms: -18 + 18 = 0
34 + 8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-34' to each side of the equation.
34 + 8x + -34 + x2 = 0 + -34

Reorder the terms:
34 + -34 + 8x + x2 = 0 + -34

Combine like terms: 34 + -34 = 0
0 + 8x + x2 = 0 + -34
8x + x2 = 0 + -34

Combine like terms: 0 + -34 = -34
8x + x2 = -34

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = -34 + 16

Reorder the terms:
16 + 8x + x2 = -34 + 16

Combine like terms: -34 + 16 = -18
16 + 8x + x2 = -18

Factor a perfect square on the left side:
(x + 4)(x + 4) = -18

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| x+.06x=477 | | Y/2=28 | | 3x+x=14 | | x=48+(x.2) | | X(X-2)+3=5-7X | | E/-25=20 | | a/3-2=-7 | | x^2+4x-52=0 | | 84-3x=12-9x | | x+1.3x=69 | | 5m+1m=3m-9 | | 1600(24-20)+200000=206400 | | Y/-4=-12 | | 4x-5y=75 | | 2y=(4x)-8 | | 6+3x=21-2x | | n+20=m | | 3(A-2)=2(A-7) | | (3/21)(21/21)= | | (x+4)(x-3)+(x+4)(x-5)= | | (4x-z)(4x-7z)= | | 2(x-6)=42/7 | | -2y(y+4)=2 | | n^2+7n-120=0 | | Ln(X^10)-Ln(X^5)=5 | | 3x+15=7x+55 | | 3(a+2)-2(a+1)=6 | | -4-2m=0 | | y^3-90=13y | | -4-2m=-16 | | 32x^2+9x-36=0 | | D=3.40+0.11n |

Equations solver categories