exam Maths Puzzle Numerical Ability

#9

Identify x = 4sint

y = 5cost

a) circle

b) parabola

c) ellipse

d) hyperbola

e) none of these

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exam Other Question

this was on my test:

Factor completely

8x(Cubed)-27

in words:
eight x cubed minus twenty seven let f(x) = x3 -8x2 + 17x -9. use the factor theorem to find other solutions to f(x) -f(1) = 0, besides x =1.

Possible answers:

-2, 5
.2, -3
.2, 5
.2, 10

Thanks to anyon