Perform the indicated operations. (Recall that negative exponents are sometimes used to denote fractions. For example,  1 7= 7−1.  Simplify your answers completely.) (a)     3 ✕ 3−1

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A: Solution ) 2x/(x + 3) + 4x/(x2 + 2x -3) To adding this we take LCM of  (x + 3) and (x2 + 2x -3) (x2…

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Q: 5/4 3/4b 2a2.4a

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A: ∑r=-9n(9n)r=∑r=-9-1(9n)r+∑r=0n(9n)r