Simplify
1) 25×a⁻⁴/5⁻²×10×a⁸
2){1/2)⁻¹×(-4)⁻¹}⁻¹
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Step-by-step explanation:
1) 25 x a^-4 / 5^-2x10xa^8
25 x a^-12 / 5^-2x10
75 x a^-12/2
2) {1/2)-¹x(-4)-¹}-¹
(-1/-2 x 4) -¹
(-4/-2)-¹
(2)-¹
-2
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