x^2+4x=-11

Simple and best practice solution for x^2+4x=-11 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+4x=-11 equation:


Simplifying
x2 + 4x = -11

Reorder the terms:
4x + x2 = -11

Solving
4x + x2 = -11

Solving for variable 'x'.

Reorder the terms:
11 + 4x + x2 = -11 + 11

Combine like terms: -11 + 11 = 0
11 + 4x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-11' to each side of the equation.
11 + 4x + -11 + x2 = 0 + -11

Reorder the terms:
11 + -11 + 4x + x2 = 0 + -11

Combine like terms: 11 + -11 = 0
0 + 4x + x2 = 0 + -11
4x + x2 = 0 + -11

Combine like terms: 0 + -11 = -11
4x + x2 = -11

The x term is 4x.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4x + 4 + x2 = -11 + 4

Reorder the terms:
4 + 4x + x2 = -11 + 4

Combine like terms: -11 + 4 = -7
4 + 4x + x2 = -7

Factor a perfect square on the left side:
(x + 2)(x + 2) = -7

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 3x-10=5x+20 | | 0.8=6-4x | | 10(8+7x)= | | 15X^3-10X^2-40X=0 | | x^3+-21x^2+108x+-280=0 | | 6x+6=-74-10x | | 4x=0 | | 92-4x=2x+14 | | 3x+1=3x-5 | | 12=0.3n | | 3m+8=16 | | 3+2z-2=7z+7-4z | | 3x-14=34 | | .11p+1.5=2.49 | | -19-6x=8-9x | | -7x+3=-81 | | 2x+10=6x-15 | | x-1.9=3.3 | | -3a=15 | | x-9=3.3 | | 36=9x | | 6d+2=5d+11 | | -3x+1.5=-13.8-1.3x | | 4m-8+2-3m=0 | | 2x+4+6x=7x | | 2X^2+16=x^2+7 | | -3x+1.5=13.8-1.3x | | 5=14-2x | | 5x-10=4x+8 | | 87+57+b+139=360 | | -3(x-2)=2[x-4(x-2)+x] | | -6x+4=12 |

Equations solver categories