Question

Which is equal to 5^4 • 5^8?

A.
5^12

B.
5^4

C.
5^2

D.
5^−4

Answer 1

when we multiply same bases we should add their exponents \[\huge\rm x^m \times x^n = x^{m+n}\]

Answer 2

help no straight answer plz

Answer 3

ok

Answer 4

don't worry :-)

Answer 5

so 5^4 times 5^8 = ???

Answer 6

244140625

Answer 7

???

Answer 8

...nope we don't need calculator...
just add exponents
exponent rule!
\[\huge\rm \color{green}{x}^\color{red}{m} \times \color{green}{x}^\color{blue}{n} = \color{green}{x}^{\color{red}{m}+\color{blue}{n}}\]

Answer 9

oh ok so its a right???

Answer 10

its easier than you think lol

Answer 11

yep that's right
\[\huge\rm \color{green}{5}^\color{red}{4} \times \color{green}{5}^\color{blue}{8} = \color{green}{5}^{\color{red}{4}+\color{blue}{8}}\]

Answer 12

wow thanks you helped me

Answer 13

np :-)

Answer 14

d:P