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derivative of (x + 9)/(x+4) = [1*(x+4) - (x+9)*1]/(x+4)2
= (x+4-x-9)/(x+4)2 = -5/(x+4)2 when x not -4
30 divided by 6 = 5, plus 4 = 9.
10^2 minus 4 times 8 divided by 8 plus 9 is equal to 105.
What is 50 minus 30 divided 6 divided 9 plus 15 equals
12 divided by 4 plus 2 times 3 = 9
-42 + 37 - (6 x 9) + (7/4) = -57.25