16/4x83
18. Factorise 3x2-x-4
19. Find the remainder when 4x²-3x²+4x-2 by x-2
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Step-by-step explanation:
16/4 * 83
332
3x^2 - x -4
3x^2-3x + 4x - 4
3x(x -1) + 4(x - 1)
(3x + 4) (x - 1)
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