4a^2-9=

Simple and best practice solution for 4a^2-9= 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 4a^2-9= equation: 


Simplifying
4a2 + -9 = 0

Reorder the terms:
-9 + 4a2 = 0

Solving
-9 + 4a2 = 0

Solving for variable 'a'.

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

Add '9' to each side of the equation.
-9 + 9 + 4a2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 4a2 = 0 + 9
4a2 = 0 + 9

Combine like terms: 0 + 9 = 9
4a2 = 9

Divide each side by '4'.
a2 = 2.25

Simplifying
a2 = 2.25

Take the square root of each side:
a = {-1.5, 1.5}

See similar equations:

| 16w^2+8w+1=0 | | 10(c-60)+4=2+C-58 | | 36v^2-25f^2=0 | | 6x+13-20=6x | | 2x+21=x-8 | | 25a^2+60ag+36g^2=0 | | 24=6-x-3 | | -5x+3x-7=8x-7 | | 5-1=7 | | 6x-(2x-11)=35 | | 48=7-2x | | x+3=x(x+5) | | 6x+11x= | | 0=-16t^2+160t+324 | | 5x^5y^3+40x^3y^2+15xy= | | 2(4x+3)=7x+8 | | 36-7v=v-6(8+6v) | | x^2-1800x-150=h | | 3x^3=3 | | 3b-9=3(8b+4) | | -5(y-2y)+3=-6(2y-y)+2+10y | | 27b^2-192=0 | | x+2x=1+5x | | 3(2x-4)=6x-12 | | 2x+3xy+5y=1 | | 2x^3-12x^2+10x= | | v=1/3 | | 32=8-3x | | 81r^2-121=0 | | 27x^3+8y^3= | | r=-10x^2+18000x+1500 | | -8(1-7x)+3=453 |

Equations solver categories