Use: (a + b)(c + d) = ac + ad + bc + bd

Answer:
d. x² + 6x +8
Answer:
4 gallons of gas will be left after driving 5 hours.
How much gas would be left after t hours: 9 - t
Step-by-step explanation:
A^2 + b^2 = c^2
a^2 + (12)^2 = (13)^2
a^2 + 144 = 169
a^2 = 169 - 144
a^2 = 25
Sqrt (a^2) = Sqrt(25)
a = 5
Please mark brainliest if this helps