Question

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

A.
7^56

B.
7^16

C.
7^15

D.
7^3

Answer 1

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

Answer 2

it is faster if you solve on a calculator

Answer 3

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

Answer 4

using a calculator is cheating, jtryon!

Answer 5

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.

Answer 6

I know its faster but it's just wrong!

Answer 7

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

Answer 8

does that make sense?

Answer 9

yes

Answer 10

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

Answer 11

@adrynicoleb plz help!