exam Maths Puzzle Numerical Ability

love you forever if you could help
in a + bi
sq rt ^3 4x-1+2=0

and

1/2-1/3 (4-x) = x/6

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exam Other Question

multiplying polynomials

r^3(2r^2-5r-1) The problem states:

Divide and simply:
(x^2 - 16)/(x^2 + 4x + 4) � (x^2 + 3x - 4)/(x^2 - x - 2)

Please help.