x^2-7=80

Simple and best practice solution for x^2-7=80 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=80 equation: 


Simplifying
x2 + -7 = 80

Reorder the terms:
-7 + x2 = 80

Solving
-7 + x2 = 80

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 = 80 + 7

Combine like terms: -7 + 7 = 0
0 + x2 = 80 + 7
x2 = 80 + 7

Combine like terms: 80 + 7 = 87
x2 = 87

Simplifying
x2 = 87

Take the square root of each side:
x = {-9.327379053, 9.327379053}

See similar equations:

| 6-9x=7x-9x+20 | | 3x+8y=61 | | w/7+44=47 | | 3x^2+18x+23=0 | | 5x^2=25-1 | | log(x+1)=2log(x-1) | | 10-2(x+3)=-8 | | 3m+7=m+11 | | 8(-10)-10y=20 | | 89=d+37 | | 2(3a+2)=-2 | | p=31+10 | | 5(3x+4)2x=7x-3(-2x+11) | | 1+7r=141 | | 13y-9y-15=57.12 | | 9x+7+10x=180 | | 4k+1=-7 | | n=86+4 | | 4x^2+8x+72=0 | | x=44-7 | | 16x+23-11x= | | 44x=22+7 | | y+7=4(x-3) | | -17-5(2x-9)=-(6x+10)+4 | | x+9+x+x=30 | | (x+1)squared=43 | | 22x=44-7 | | ln(2x+1)-ln*x=2ln*2 | | 7x+5(x*0.7)=14600000 | | 11x+8=14x-3 | | 11x+8+14x-3=180 | | 4x+x+5=25 |

Equations solver categories