X^2+7X+13=0

Simple and best practice solution for X^2+7X+13=0 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+7X+13=0 equation:


Simplifying
X2 + 7X + 13 = 0

Reorder the terms:
13 + 7X + X2 = 0

Solving
13 + 7X + X2 = 0

Solving for variable 'X'.

Begin completing the square.

Move the constant term to the right:

Add '-13' to each side of the equation.
13 + 7X + -13 + X2 = 0 + -13

Reorder the terms:
13 + -13 + 7X + X2 = 0 + -13

Combine like terms: 13 + -13 = 0
0 + 7X + X2 = 0 + -13
7X + X2 = 0 + -13

Combine like terms: 0 + -13 = -13
7X + X2 = -13

The X term is 7X.  Take half its coefficient (3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
7X + 12.25 + X2 = -13 + 12.25

Reorder the terms:
12.25 + 7X + X2 = -13 + 12.25

Combine like terms: -13 + 12.25 = -0.75
12.25 + 7X + X2 = -0.75

Factor a perfect square on the left side:
(X + 3.5)(X + 3.5) = -0.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 5x^2+16x+70=0 | | 2c+1=4c-2 | | 8x+9y=0 | | 9.7x+35.29=-10.3+33.93 | | 7.8x-2.5=5.3 | | 4a-2y=8 | | x^2+14x-12y+97=0 | | x+8y+12=0 | | a+16b+10=0 | | 4a+3b+1=0 | | (X-3)(2x+5)=0 | | 8x+15=2x-5 | | 12x+3y=0 | | 12=0 | | 15.4x=110.88 | | (y+4)(y-3)= | | 0.5x^2+2x+3=x+7 | | 3y^2-18=90 | | (k-20)*7= | | 7d+4=8-1d | | 7d+4=8 | | 2(x-6)=13-3x | | y^2-12y+9=0 | | 3(y^2-12y+9)=0 | | -0.5x^2-0.5x+6=5 | | a/5+6a= | | 3y^2-3y-18=0 | | 17+4y= | | 3(t^2-6t+8)=0 | | l=5w | | 551=6F-19 | | 9+m/6= |

Equations solver categories