Question

Which expression is equivalent to 4^7 * 4^-5 ?
A) 4^12
B) 4^2
C) 4^-2
D) 4^-35

I got B as my answer am I correct ?

Answer 1

when we multiply, we add the exponents:
\[\huge\bf a^b*a^c=a^{b+c}\]

Answer 2

so we have:
\[\huge\rm 4^7*4^{-5}=4^{7+(-5)}=?\]

Answer 3

2

Answer 4

yeah:
so we have:
\[4^2\]

Answer 5

Alrighty Thank you :)