72). SimplifyF-1X-412×:/デ[52 × 7-453 × 7 – InterviewSolution

1.	72). SimplifyF-1X-412×:/デ[52 × 7-453 × 7
Answer» (5^[-1-2]×7^[2+4])^7/2(5^[-2-3]×7^[3+5])^-5/2= (5)^[-21/2]x(7)^21 (5)^[25/2]x(7)^-20= (5)^[4/2](7)^[21-20]= (5)^2 (7)^1= 25*7= 175 ans

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