Simplify the expression:
7^7 • 7 • 7^8

A.
7^56

B.
7^16

C.
7^15

D.
7^3

Question

Simplify the expression:
7^7 • 7 • 7^8
 
 A.
7^56
 
 B.
7^16
 
 C.
7^15
 
 D.
7^3

anonymous · Answer

OK, you have 7^7 so that is (7)(7)(7)(7)(7)(7)(7) * 7 * 7^8 which is 7 times itself 8 times and then solve

anonymous · Answer

it is faster if you solve on a calculator

anonymous · Answer

when you multiply exponents, the exponent rule is that you add the exponents

anonymous · Answer

using a calculator is cheating, jtryon!

imstuck · Answer

Are you familiar with, say, how to multiply the exponents when using a variable of x?$$x ^{5}\times x ^{3}  \times x ^{2}$$It's the same as with variables.  Keep the base of 7 and add the exponents.

anonymous · Answer

I know its faster but it's just wrong!

anonymous · Answer

Yeah, it is the exponent rule x^5x^6=x^5+6

anonymous · Answer

does that make sense?

anonymous · Answer

yes

anonymous · Answer

ok...fine I don't get it!

anonymous · Answer

@adrynicoleb plz help!