x*x-7=

Simple and best practice solution for x*x-7= 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*x-7= equation: 


Simplifying
x * x + -7 = 0

Multiply x * x
x2 + -7 = 0

Reorder the terms:
-7 + x2 = 0

Solving
-7 + x2 = 0

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 = 0 + 7

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

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

Simplifying
x2 = 7

Take the square root of each side:
x = {-2.645751311, 2.645751311}

See similar equations:

| w^2+6w+9=0 | | 6(x-6)+16=4(x-4) | | -2x+3+3x=34+4 | | y+2=7x | | 2+19p=125.5 | | 8x+5+3x=45+4 | | 2m-7n=-14 | | 3(w+2)=2(w-1) | | 3(x+2)-2x=24 | | 24x+2=26x-8 | | 4(5x-1)+2=-1 | | 2x+y=-16 | | (2x-3)=4 | | ln(x-8)+ln(x+9)=1 | | 5-x=3 | | 7-(3m)=1 | | 7-3m=1 | | 30k+88=163 | | 5(m+3)+2=2m+5 | | 1x-3y=2 | | 24=-(x+3) | | -2n+1-3n-n-4=7 | | 4(2X-1)+2=-1 | | 5(m+3)+2=m+5 | | y=x^2+4x-8 | | 2x-14+5x=20+1 | | 6k-2=26 | | 4x-8y=12 | | 6K-2=24 | | 3-6-2x=4 | | 5x-6x^2=0 | | 6(3x-1)=-42 |

Equations solver categories