Question

please answer with explanation so I can believe I will mark as brainiest please no spam​

Answer 1

Answer:

The Twelfth Century was arguably one of the most important in medieval times, if not in the whole of European History. The rediscovery of many Latin and Greek texts following the fall of the Greek Empire and increased contact with Islamic scholars led to an increase in scientific knowledge, and to developments in all intellectual fields. The Twelfth Century saw great advances in technology, which combined with a warmer climate and greater stability led to an agricultural surplus, an improved quality of life and new opportunities. This more dynamic European Society invented spectacles, paper, developed the use of gunpowder, more accurate clocks and printing

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Answer 2

Answer:

Use identities to solve this

In numerator:

• (a-b)^3 = a^3 - 3a^2b + 3 ab^2 - b^3

In denominator,

• multiply all the terms.