
It should be x=11 instead of x=-11, so
he is not correct because he made a sign error.
43% of 600 gallons of water is
258Convert your percentage into a decimal:

Multiply your decimal and 600:
Answer:
(4x + 1)(x² - 2)
Step-by-step explanation:
Given
4x³ + x² - 8x - 2 ( factor the first/second and third/fourth terms )
= x²(4x + 1) - 2(4x + 1) ← factor out (4x + 1) from each term
= (4x + 1)(x² - 2)