x^2+12x=-45

Simple and best practice solution for x^2+12x=-45 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=-45 equation:


Simplifying
x2 + 12x = -45

Reorder the terms:
12x + x2 = -45

Solving
12x + x2 = -45

Solving for variable 'x'.

Reorder the terms:
45 + 12x + x2 = -45 + 45

Combine like terms: -45 + 45 = 0
45 + 12x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-45' to each side of the equation.
45 + 12x + -45 + x2 = 0 + -45

Reorder the terms:
45 + -45 + 12x + x2 = 0 + -45

Combine like terms: 45 + -45 = 0
0 + 12x + x2 = 0 + -45
12x + x2 = 0 + -45

Combine like terms: 0 + -45 = -45
12x + x2 = -45

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 = -45 + 36

Reorder the terms:
36 + 12x + x2 = -45 + 36

Combine like terms: -45 + 36 = -9
36 + 12x + x2 = -9

Factor a perfect square on the left side:
(x + 6)(x + 6) = -9

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| a^4=625 | | 3/2(x-80) | | x^2-0.5x+0.11=0 | | x^2-0.5x+11=0 | | 6a+9=a-5 | | -63x =110x+80 | | -63x = 110x+80 | | x=3507 | | 28u^5-36u^4/4u^2 | | .04=70 | | x(.04)=70 | | x*.04=70 | | x^3+11x+28=0 | | 3-4y=5x-6 | | 11a+13b+17c=132 | | 5x^2-9x+72=0 | | 5x-11+11=1-3x | | 12q-8-4q= | | 5-3x=2-2x | | 3x+14=-1x+34 | | X+2x+x+3=31 | | X+2x+3=31 | | 3x^2-mx-8=0 | | y=4(3x-5)/9 | | w=(0.2)(8+3) | | 3x+6=z+2 | | 5(6)-3(5)=y | | 4y=x/3-2 | | a=29-5 | | 5x=2.66 | | 5c-77=8c-4 | | (-3x)*1/9= |

Equations solver categories