Answer:
(x - 9)(x + 9)
Step-by-step explanation:
x² - 81 ← is a difference of squares and factors in general as
a² - b² = (a - b)(a + b), then
x² - 81
= x² - 9²
= (x - 9)(x + 9)
I think equation 2? (vavzhsvdvxvbshsh)
Let be the volume of the solid S. We can write:
Now, we just need to calculate the volume of the original prism (Vtriangular) and the volume that was removed (Vrectangular). So:
Then,
Thus, the answer is 45.4 u³.
Answer:
25 m
Step-by-step explanation:
The answer to your question, is 14 inches
hope this helps :D