a^2-21=14

Simple and best practice solution for a^2-21=14 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 a^2-21=14 equation: 


Simplifying
a2 + -21 = 14

Reorder the terms:
-21 + a2 = 14

Solving
-21 + a2 = 14

Solving for variable 'a'.

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

Add '21' to each side of the equation.
-21 + 21 + a2 = 14 + 21

Combine like terms: -21 + 21 = 0
0 + a2 = 14 + 21
a2 = 14 + 21

Combine like terms: 14 + 21 = 35
a2 = 35

Simplifying
a2 = 35

Take the square root of each side:
a = {-5.916079783, 5.916079783}

See similar equations:

| x=5x-92 | | 9x+2=-3+4x+15 | | 2w-16=-8 | | 0=81x^8+y^8 | | 0.91x-0.89=14.30-2.19x | | 2138./[;plkjkmo,lp.;[/ | | 24x-5(3x-2)=-12 | | 100-2x+3+4=-100+2x-3-4 | | 5w-10=35 | | 6a-3(a-1)=3a+3 | | 3*(x+2)=-9x-7 | | 13-(x+8)=5x-7 | | -2=b | | 10x+30=15x+35 | | 2cos^2(x)-cos(x)-1=0 | | 45+x=138 | | 2.5(27)= | | 5r^2-7=12r | | E=102.2+658 | | X+2x+(5x+1)= | | 3+2y=-1 | | 4q^2+3q^2=-4q+18 | | lxw=78 | | Cos^3(x)-cos(x)=0 | | (2/3)x(2/3) | | 3y=54 | | ×/7=14 | | 20=14+7 | | 6y-25-9y+37= | | w-4/9)(-2/3)=-4/5 | | q-16=125 | | 6z-10+5x+12=180 |

Equations solver categories