Question

What is the value of this expression?

6^{-7} x 6^{4}

Answer choices:

A. 6^{-3}
B. 6^{-11}
C. 6^{-28}
D. 6^{11}

Answer 1

\[a^b*a^c=a^{b+c}\]

Answer 2

So, sorry, I'm confused. What exactly do I need to do?
What I do know is that 6^4 = 1296.
And then 6^-7 = 279936.
But I don't think that this is what I'm supposed to do.

Answer 3

No you need to add the powers, since they have the same base.

Answer 4

So it would be -7 + 4?

Answer 5

Would it be 6^-3? (A?)
Because if I do -7 + 4, that equals -3.
And then I'd assume the base would stay the same.

Answer 6

correct

Answer 7

Ok, thanks! @welshfella & @Evoker :)