How do you solve #3^ { 4} \div [ ( 7.2\times 0.8) + 3.24]#?

1 Answer
Nov 16, 2016

#9#

Explanation:

In any calculation involving different operations, always count the number of terms first. In each term the order is:
Brackets first, then powers and roots, then multiply and divide.

This expression is all one term - start with the innermost bracket.

#3^4 = 81# can be calculated at any stage.

#3^4div[(color(red)(7.2xx0.8))+3.24]#

=#81div[color(red)5.76+3.24]#

=#81div[color(blue)(5.76+3.24)]#

=#81divcolor(blue)(9)#

=#9#