The Student Room Group
Competition - post a photo you've taken of nature >>
Competition - post a photo you've taken of nature >>
Competition - post a photo you've taken of nature >>

Is this correct? Maths

Express 8^2x+3 in the form 2^y, stating y in terms of x
8/2=4
4(2x+3)=8x+12
2^8x+12
Consider what power of 2 makes 8, that power is the number which you must multiple 2x+3 by
6x+9
Original post by habeebobis
6x+9

Correct.

82x+3=(23)2x+3=23(2x+3)=26x+98^{2x+3}=(2^3)^{2x+3}=2^{3(2x+3)}=2^{6x+9}
Reply 4
Avatar for Musicanor
Musicanor
OP
9
Thanks
Original post by RogerOxon
Correct.

82x+3=(23)2x+3=23(2x+3)=26x+98^{2x+3}=(2^3)^{2x+3}=2^{3(2x+3)}=2^{6x+9}

Thanks
Reply 5
Avatar for Musicanor
Musicanor
OP
9
Original post by habeebobis
6x+9

Thanks
Reply 6
Avatar for Musicanor
Musicanor
OP
9
Original post by EmilySarah00
Consider what power of 2 makes 8, that power is the number which you must multiple 2x+3 by


2
Thanks

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you