Simplify the expression. show work.
9xy^ - 11xy^

Convert 2000 swiss francs to dutch guilders

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Determine the domain and range of the given function. the domain is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}. the range is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}.