Four mark exercise problems V — task. Mathematics State Board, Class 8.

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1. Factorise the following expressions:

(i)

$c^2 - 4c - 12 =$

(ii)

$m^2 + m - 72 =$

(iii)

$4x^2 - 8x + 3 =$

Answer variants:

$(m + 9)(m - 8)$

$(m - 9)(m + 8)$

$(2x + 3)(2x + 1)$

$(c + 2)(c - 6)$

$(2x - 3)(2x - 1)$

$(c - 2)(c + 6)$

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