x^2-7=1

Simple and best practice solution for x^2-7=1 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=1 equation: 


Simplifying
x2 + -7 = 1

Reorder the terms:
-7 + x2 = 1

Solving
-7 + x2 = 1

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 = 1 + 7

Combine like terms: -7 + 7 = 0
0 + x2 = 1 + 7
x2 = 1 + 7

Combine like terms: 1 + 7 = 8
x2 = 8

Simplifying
x2 = 8

Take the square root of each side:
x = {-2.828427125, 2.828427125}

See similar equations:

| x^2+10x-4=0 | | 4x^2-13x+23=3x+8 | | 12+9=14 | | 3x+0y=12 | | 2x-y=14 | | 6x^2=5x+1 | | 5w=50.25 | | 2l+.5=12.9 | | 5x-10.5=20.5 | | 8.25=4a+1.25 | | (X+2)(x+4)=0 | | X^5+x^4-6x^3-6x^2+5x+5=0 | | 2x(x-8)=-x-18 | | 6-4(2x+1)=4+2(x-6)+3 | | 4*0.1=X*0.9 | | 20t-6t=7 | | 2x^2+8= | | 5x+2y=50 | | y=5-2x | | 36y^2+49= | | 8x+20y=200 | | 2.25x+x=1300000 | | X+3=-7x+67 | | 4x+14y=140 | | 5x+7y=91 | | 5x+7x=91 | | x^2+4x-140=0 | | 9x+3y=24 | | x^2+5x-28=0 | | x^2+5x+28=0 | | 15b^2+22b+8=0 | | 30b^2+49b+4=-16 |

Equations solver categories