X^2+4x=-21

Simple and best practice solution for X^2+4x=-21 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=-21 equation:


Simplifying
X2 + 4x = -21

Solving
X2 + 4x = -21

Solving for variable 'X'.

Move all terms containing X to the left, all other terms to the right.

Add '-4x' to each side of the equation.
X2 + 4x + -4x = -21 + -4x

Combine like terms: 4x + -4x = 0
X2 + 0 = -21 + -4x
X2 = -21 + -4x

Simplifying
X2 = -21 + -4x

Reorder the terms:
21 + X2 + 4x = -21 + -4x + 21 + 4x

Reorder the terms:
21 + X2 + 4x = -21 + 21 + -4x + 4x

Combine like terms: -21 + 21 = 0
21 + X2 + 4x = 0 + -4x + 4x
21 + X2 + 4x = -4x + 4x

Combine like terms: -4x + 4x = 0
21 + X2 + 4x = 0

The solution to this equation could not be determined.

See similar equations:

| .22=.05n | | 10-10x=-3 | | 25x+50=125 | | 7(10x+2x)=4 | | -11b=-11 | | 10(8x-10)=4 | | 7(-8m-3)= | | -x^2-8x+20=0 | | X^2+5x=-12 | | B=3a+3c+p | | -4y+4=-4(2y+8) | | 8n-(6n+5)=9 | | 3x^2-5x+3=0 | | 5x=9x-6 | | 7x*2y= | | 192w^3-3=0 | | 2x^2+50=12x | | 9y^3-18y^2-4y+8=0 | | -4y^2-9y+28=0 | | d-2=-25 | | -4m+2m=6 | | x^20=14444 | | x^2=14444 | | -a+20+7a=-4 | | 6ab+ab= | | -11x=-11 | | 9x^3+8=4x+18x^2 | | 11z=-55 | | -10-4w=22 | | z^5-3z^4-16z+48=0 | | 3.5g-6.3=2.1g+4.2 | | -3z=18 |

Equations solver categories