What kind of sequence is this. 25, 36, 49, 64,...

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

(10. in the figure, a aabc is drawn tocircumscribe a circle of radius 3 cm ,such thatthe segments bd and dc are respectively oflength 6 cm and 9 cm. find the length ofsides ab and ac.

Why is x= 4 a solution to the proportion 14/x 56/1 6