Two mark example problems V — task. Mathematics State Board, Class 9.

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Factorize the following:

Answer variants:

$(7 m + 6 n) (7 m - 6 n)$

${(3 x + 2 y)}^{2}$

$(6 m + 7 n) (6 m - 7 n)$

${(5 a - 1)}^{2}$

${(2 x + 3 y)}^{2}$

${(1 - 5 a)}^{2}$

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6. Two mark example problems V