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SOME ONE PLEASE HELP Determine the sum: (9r3s2t − 4r2s2t2 − 6rs2t3) + (−4r3s2t + 8rs2t3).

A. 3r10s10t10
B. −r3s2t + 4rs2t3
C. 5r6s4t2 − 4r2s2t2 + 2r2s4t6
D. 5r3s2t − 4r2s2t2 + 2rs2t3

1 Answer

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the answer is
5r3s2t4r2s2t2+2rs2t3
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