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does any one have notes to the syllabus to sdd??? i havn't even looked at the syllabus yet!!!!!

solve this for me . practically i can't do maths any more find the coeffient of x in the expansion: (2+9x)^4.(5+2/x)^5 where ^4 = to the power of 4 and . = times show steps. thank you

lets consider this scenario: you are in space, where it is a vacumm, without any space protection suits. according to chemistry concepts, you are suppose to 'expand' . however in sci fi movies, this does not happend. Q: will you explode (expand) in this vacumm space without any protective...