Multiplication, division and factorization of integers Given a + 1 / a = 3, then the value of a ^ + 1 / A ^ is? What is the answer to (x + y) ^ + 2 (x + y) + 1 factorization? Write out the detailed process of solving these two problems ^The sign is 2, which is the square

Because (a + 1 / a) ^ = a ^ + 2 + 1 / A ^ = 3 ^ = 9
So a ^ + 1 / A ^ = 9-2 = 7
(x+y)^+2（x+y)+1=(x+y

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