Answer:
D
Step-by-step explanation:
a² - b² ← is a difference of squares and is factored in general as
(a + b)(a - b)
42² - 38² ← is a difference of squares and factors as
42² - 38² = (42 + 38)(42 - 38) = 80(4) = 320 → D
81 because their is no 14,24,or112,but there are 2 81's.
Answer:
2.5551872e+22
Step-by-step explanation:
Answer:
um
Step-by-step explanation:
The answer is 3 cm. You just have to add the sides you know (6 and 8) and subtract that from the perimeter (18)
