smithsa10630
15.07.2019 •
Mathematics
What is the factorization of 81a6 -100
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Ответ:
see explanation
Step-by-step explanation:
81
- 100 ← is a difference of squares which factors in general as
a² - b² = (a - b)(a + b)
81
= (9a³ )² ⇒ a = 9a³ and 100 = 10² ⇒ b = 10
Hence
81
- 100
= (9a³)² - 10²
= (9a³ - 10)(9a³ + 10)
Ответ:
She needs to divide 6 by 4.
Step-by-step explanation: