I DESSPERATLY NEED HELP IDC IF I SPELLED THAT WRONG IM GOING TO DIE IF I DONT GET THIS ANSWER

Use the multiplier method to incrases £258 by 43%

Is there a direction u in which the rate of change of f(x,y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.

Which of the following expressions cannot be simplified to x – 2?