Two mark exercise problems XIII — task. Mathematics State Board, Class 9.

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Answer variants:

(a + 2) (a - 2) (a^{2} + 2 a - 4) (a^{2} + 2 a + 4)

(3 x - 2 y) ({9 x}^{2} + 6 xy + {4 y}^{2})

(3 x + 2 y) ({9 x}^{2} - 6 xy + {4 y}^{2})

(a + 2) (a - 2) (a^{2} + 2 a + 4) (a^{2} - 2 a + 4)

(2 x - 5 y) ({4 x}^{2} + 10 xy + {25 y}^{2})

(2 x + 5 y) ({4 x}^{2} - 10 xy + {25 y}^{2})

Factorize the following:

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24. Two mark exercise problems XIII