Question

Factor completely.

49t 6 - 4k 8

A.(7t³ + 2k4)(7t³ - 2k4)
B.(7t³ - 2k4)(7t³ - 2k4)
C.(7t³ + 2k4)(7t³ + 2k4)

Answer 1

Hi Ethan, just as a quick check. I typically look at the sign that I want for the terms and then look at the answer to see what they provide.

in the term, \[-4k^8\] which answer would provide that if you multiplied the right side?

Answer 2

C

Answer 3

So, you've got
\[+2k^4 * -2k^4\]
\[-2k^4 * -2k^4\]
\[+2k^4 * +2k^4\]
The only one the gives the answer of
\[-4k^8\]
is the A.

Answer 4

thanks for the help

Answer 5

Welcome. Good morning!