Find values of x and y such that both fx(x,y) = 0 and fy(x,y) = 0.f(x,y) = x2 + y2 + 6x - 7y

A. x = , y = -7
B. x = -3, y =  
C. x = - , y = 7
D. x = 3, y = -  


Answer: B

Mathematics

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