How do you evaluate this expression? i don't

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 expression is equivalent to the square root of 2 multipllied by 5 divided by 18

If she had a problem that was like this how would you solve it? 9/5 x (4x1/6)