x^2-18=15

Simple and best practice solution for x^2-18=15 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^2-18=15 equation: 


Simplifying
x2 + -18 = 15

Reorder the terms:
-18 + x2 = 15

Solving
-18 + x2 = 15

Solving for variable 'x'.

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

Add '18' to each side of the equation.
-18 + 18 + x2 = 15 + 18

Combine like terms: -18 + 18 = 0
0 + x2 = 15 + 18
x2 = 15 + 18

Combine like terms: 15 + 18 = 33
x2 = 33

Simplifying
x2 = 33

Take the square root of each side:
x = {-5.744562647, 5.744562647}

See similar equations:

| 4x+5x+8=10x-2+4x | | -33=3-4 | | (n+2)(2n+5)=0 | | 5a+5b+4=17+3b | | 3x+5y=20 | | -136-7x=10x+17 | | 15x-9-3x= | | 3x+6=-49-8x | | 2x+34=4x+14 | | a^4-1=a^3+2 | | 122-3x=4x+24 | | 16a-40=6a-4b-14 | | 64=x^2+12x | | 8*-1.825= | | 10a+4b=54 | | x+2n+12=15n+35 | | 2w-6(w+8)=-12 | | 4a-1=3a+2 | | y-21=-15 | | 3(4y-5)=21 | | 5x-6=2+9x | | 7a-b=15a | | 8+3x=14+x | | 2(x+5)=26 | | 1j=20-4j | | 13r=-39 | | 2z-5=27 | | 5ln(5x+4)=22 | | 4z-7(3z-4)= | | p(x)=x^3-3x^2+6x+8 | | 180-5x=40x+20 | | 4n+7=3n |

Equations solver categories