Help on Exponents
Author
I'm writing my maths exam soon and i was doing a problem involving the simplification of exponents. I follow the steps for simplifying perfectly but i come out with te wrong answer according to my text book. Heres the problem:
2x3 to the power of n minus 3 to the power of (n+2) divided by 3 to the power of (n+1). My answer is -6/3 but my text books is -7/3. Which ones right?
Quite easy, you should have remade the calcul :
(2*3^n - 3^n+2)/(3^n+1)
= (2 - 3^2) / 3
= (2 - 9) / 3
= -7 / 3
Seb
(2*3^n - 3^n+2)/(3^n+1)
= (2 - 3^2) / 3
= (2 - 9) / 3
= -7 / 3
Seb
This topic is closed to new replies.
Advertisement
Popular Topics
Advertisement
