answer is 20 from chapter expansion
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1
Answer:
20
Step-by-step explanation:
a² + 3a + 1/a² - 3/a given a - 1/a = 3
=> a² + 1/a² + 3a - 3/a [ rearrange ]
=> a² + 1/a² + 3 [ a - 1/a ] ------------(1)
now [ a - 1/a ]² = 3²
=> a² + 1/a² - 2* a *1/a = 9
=> a² + 1/a² - 2 = 9
=> a² + 1/a² = 11-------------(2)
substituting 2 in 1 , we get
11 + 3 [3]
=> 20
therefore a² + 3a + 1/a² - 3/a = 20
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2
Answer:
20 is your answer
Step-by-step explanation:
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