Cube root (27a^12)
Cube root 27 = 3 because
3 * 3 * 3 = 27
Cube root a^12 = a^4 because
a^4 * a^4 * a^4 = a^12
ANSWER
3a^4
If its a 90 degree then the answer is 68
if its a 180 degree then the answer is 158
if its a 270 degree then the answer is 248
if its a 360 degree then the answer is 338
Hello! And thank you for your question!
All you can do is simplify √28 to 2√7
Then the equation becomes 2√7 - 2√7
Subtract the like terms to get 0.
Final Answer:
It is a rational and equal to 0.

Delta equation is:

but we are interested in

because it determines the discriminant


which means that discriminant is positive :)