WILL GIVE BRAINLIEST PLEASE HELP Use pascal's triangle and combination to expand and simply each of the following.
a) (a+b) ^6
b) (x-2)^5

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

Which polynomial correctly combines the like terms and expresses the given polynomial in standard form? 8mn5 – 2m6 + 5m2n4 – m3n3 + n6 – 4m6 + 9m2n4 – mn5 – 4m3n3 n6 + 7mn5 + 14m2n4 – 5m3n3 – 6m6 –2m6 – 5m3n3 + 14m2n4 + 7mn5 + n6 14m2n4 + 7mn5 – 6m6 – 5m3n3 + n6 n6 – 6m6 + 7mn5 + 14m2n4 – 5m3n3 show work

Would love some on this! include step by step have a good day!