M8 47) One of the factors of x2 - 7x + 12 is: (v-l xE) 2nousigo be labbet a. (x- 6) b. (x+ 4) C. (x+3) dy (x-4) 48) One of the factors of 5a2 - 22a +21 is: a. (a+ 3) b. (5a + 2) с. (5а + 7) d. (5a - 7) ds-hs nadse go beld b ni s 49) One of the factors of x(3x - 2) - (3x - 2) is: a. х 0S b. (3x - 1) с. (х — 1) d. (3x+ 2) (T+0(14x2) an oilpiego be pg obe300uei- 50) One of the factors of 49x4 - 121 a. (7x - 11) 1 1) (7x

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