book Maths Puzzle Numerical Ability

if x < -1 then /x/ _ 1

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book Other Question

Given f (x) = 5x^2 - 12x + 3, find f (-2)
A) -41 B) -43 C) 47 D) 49
Find a polynomial with leading coefficient 1 and degree 3 that has –
1, 1, and 3 as roots.