x^2+12x=-47

Simple and best practice solution for x^2+12x=-47 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+12x=-47 equation:


Simplifying
x2 + 12x = -47

Reorder the terms:
12x + x2 = -47

Solving
12x + x2 = -47

Solving for variable 'x'.

Reorder the terms:
47 + 12x + x2 = -47 + 47

Combine like terms: -47 + 47 = 0
47 + 12x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-47' to each side of the equation.
47 + 12x + -47 + x2 = 0 + -47

Reorder the terms:
47 + -47 + 12x + x2 = 0 + -47

Combine like terms: 47 + -47 = 0
0 + 12x + x2 = 0 + -47
12x + x2 = 0 + -47

Combine like terms: 0 + -47 = -47
12x + x2 = -47

The x term is 12x.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12x + 36 + x2 = -47 + 36

Reorder the terms:
36 + 12x + x2 = -47 + 36

Combine like terms: -47 + 36 = -11
36 + 12x + x2 = -11

Factor a perfect square on the left side:
(x + 6)(x + 6) = -11

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 3x-3=2x+23 | | -63+6x=105-8x | | -19x=-4x^2+30 | | -25+2x=-3x+45 | | Xm+2t=3p | | -11x+5=7x+41 | | -6x-5=-x-20 | | -37-9x=-12x+11 | | 5(3+x)=4(x-1) | | 4x-20=9x+11 | | 4.8N-3.8N-5.5=5.9 | | 4x^2-70=5x^2+19x | | -6x-5=x-20 | | 4.75=x+(0.25) | | 2x^3-4x^2+8x-16=0 | | 3o+13=23-20 | | 5y+29-y=29 | | 3r^2+1=145 | | 2y+20=6y-8 | | (8x^3)+1=0 | | 5x+24y-22=7.5 | | 1=Y+9 | | 11x-2=10x+7 | | -9x-5=-3x-47 | | f(-x)=2x+7 | | F=gh+5 | | 18+8x=9(x+2) | | 18.00-2p=6.00 | | f(x+5)=2x+7 | | 2p^2+18p+13=0 | | Y+4.9=2.3 | | 8m^2+1=377 |

Equations solver categories