exam Maths Puzzle Numerical Ability

find the f(-1) for the following equation
f(x)=-2x3+4x2-6x+9

the 3 and the 2 are powers of 3 and 2

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exam Other Question

x^2+y^2=61 must show equation I need to Write an equation in the standard form for the indicated conic section of A parabola with vertex (3,1) and directrix y = -1