Will give brainlist worth 50 ! ! write expressions equaling 1-100 using only the numbers 2,0,1, and 9. you may use the operations of addition, subraction, multiplication, and division, as well as "juxtaposition" (putting two numbers side by side as in 12 or 91), exponents, square roots, decimal points, and factorials. if you use exponents, the must be a 1,0,2, or 9. all four digits must be used once in each expression.