Answer:
2x⁴ - 20x² - 78
To factor the expression look for the LCM of the numbers
LCM of the numbers is 2
Factorize that one out
That's
2( x⁴ - 10x² - 39)
Hope this helps
For the first question the answer is the second option.
For the second question the answer is the first option.
Hope I didn't mess up for your sake
