Asked by sean

2^99 - (-2)^99 =

a. 0^99
b. 2^99
c. 2^198
d. 4^99

is the answer a?
Answered by scott
no ... none of the choices are correct

check the transcription of the problem
Answered by sean
sorry, it's

2^99 + (-2)^99
Answered by Ms. Sue
https://www.google.com/search?source=hp&ei=JjVZW_b-MIzGsQWFnqGwBA&q=2%5E99+%2B+%28-2%29%5E99+%3D+&oq=2%5E99+%2B+%28-2%29%5E99+%3D+&gs_l=psy-ab.3..33i160k1.3945.11950.0.12721.9.6.2.0.0.0.146.690.0j6.6.0....0...1.1.64.psy-ab..1.2.221.0...0.nBbbKmhQhvA
Answered by scott
then your answer is correct
Answered by Reiny
(-2)^99 = -(2^99)

so 2^99 + (-2)^99
= 2^99 - 2^99
= 0

Ms. Sue's google calculation confirmed this as well.
0^99 is a rather sloppy way to state the answer, but a) is correct