x^2-7=13

Simple and best practice solution for x^2-7=13 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^2-7=13 equation: 


Simplifying
x2 + -7 = 13

Reorder the terms:
-7 + x2 = 13

Solving
-7 + x2 = 13

Solving for variable 'x'.

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

Add '7' to each side of the equation.
-7 + 7 + x2 = 13 + 7

Combine like terms: -7 + 7 = 0
0 + x2 = 13 + 7
x2 = 13 + 7

Combine like terms: 13 + 7 = 20
x2 = 20

Simplifying
x2 = 20

Take the square root of each side:
x = {-4.472135955, 4.472135955}

See similar equations:

| y-24=-30 | | 8x+4a+3x+a= | | -(15x-1)+24+2(5+5x)=0 | | 4s=-36 | | -38=6(1-3b)-4b | | 45X^3-63X^2+20X-28= | | X-3+4x=5 | | 49-64z^2=0 | | -5x+4(-x+9)-7(7+3x)=-7 | | 5mn+6m+1+2mn= | | 49-64z=0 | | (a-8b)(a+4b)=0 | | -110x+1900=150x+2400 | | 3m-m=6-4m | | 4x^3+30x^2+36x=0 | | -15-5x=6x-4 | | 5mn+6mn+1+2mn= | | 10(-3-2x)+10-2(6x-13)=0 | | -4-4x-6x=-14 | | 32x+2=9 | | x^6=27 | | -18=-4x+x | | 10.8X-3.5X=219 | | 14.00-3.00x=2 | | 10x^2-31x-14=0 | | 5x^2+8x=-4 | | 31w+5w^2=-30 | | -6-7(c+10)=0 | | 6x+6+2x=2x+-4+4x | | (7+x)-5=20 | | 31w+5w^2=30 | | 3x+4=7x+16 |

Equations solver categories