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 = 3
x2 = 3

Simplifying
x2 = 3

Take the square root of each side:
x = {-1.732050808, 1.732050808}

See similar equations:

| 1.5=-7n | | -10-(4x-5)=75 | | 8r+-8=-32 | | 5(2+4x)=10y-70 | | 2(4x-9)+8=62 | | 6x-24=40-10x | | X^2+4X+2Y+12=0 | | X^2+Y+12=-4X-Y | | 126=30+12x | | 26=5x-416 | | 1+5r=-5 | | 2x^2-16x+60=0 | | 5(4v-12)=2(10v-30) | | 14+2x-3=51 | | -2z+(-26)=6 | | 2x+3-4x=13 | | 9+-3x=y | | 8[4x-2]=112 | | h=2958h | | 3s/4-3+s/3=10 | | -3w+5=12 | | 14+x=-10 | | x-3+8=11 | | 15-e/5=10 | | 7d+20=83 | | 3(n-10)=5(n+10) | | v=2s+8then | | 5x-4=x+6 | | 36+4y=0 | | a^2-900a-22500=0 | | -10y^2+15=0 | | n+4/6=8/2 |

Equations solver categories