factorise 4xsq. + 9ysq. - 25zsq. + 12xy
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Answer:
djdjsieiisisjsjsjsjsjusu
Step-by-step explanation:
usiwiwjsnshhwiquwbqbqoaishvqbqhquq
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Answer:
Chemical engineering is a branch of engineering which deals with the study of design and operation of chemical plants as well as methods of improving production. Chemical engineers develop economical commercial processes to convert raw material into useful products.
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