A. If HO = NR,ZH = ZN and 20 ZR, which triangle - congruence postulate guarantees that AHOP = ANRT ? Sketch the figures. B. Fill in the missing reason in the flowchart to complete the proof of the statement. Given: C is the midpoint of AE; ZA = ZE. D Prove: AABC = AEDC E Proof:

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A: To determine the coefficient of x2wa3b in the expansion of x+y+w+a+b7.

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A:

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Q: 7. How many terms are there in the multinomial expansion of (x₁ + x₂ + ... .+x)"? ******..

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