x3+y3+z3= plz help if you can sell this you're really smart you're really kind and you're really good at math I need your help so help me

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

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.

Plzzz answer both questions and i will give you 100 points