If 2^3 x 2^n =2^7 then n=

Asked by s6645trk | 25th Mar, 2021, 11:14: AM

Expert Answer:

begin mathsize 16px style 2 cubed space straight x space 2 to the power of straight n equals 2 to the power of 7
rightwards double arrow 2 to the power of 3 plus straight n end exponent equals 2 to the power of 7 space space........ space space space space straight a to the power of straight m cross times straight a to the power of straight n equals straight a to the power of straight m plus straight n end exponent
Since space base space are space same comma space we space get
rightwards double arrow 3 plus straight n space equals space 7
rightwards double arrow space space space space space space straight n space equals space 4
end style

Answered by Yasmeen Khan | 25th Mar, 2021, 11:51: AM