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

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Answer variants:

(x + 2 y - 1) (x^{2} + {4 y}^{2} + 1 - 2 xy + 2 y + x)

(x + 2 y + 1) (x^{2} + {4 y}^{2} + 1 + 2 xy + 2 y + x)

{(5 x + 2 y + 3 z)}^{2} or {(- 5 x + 2 y - 3 z)}^{2}

{(- 5 x + 2 y + 3 z)}^{2} or {(5 x - 2 y - 3 z)}^{2}

(l - 2 m - 3 n) (l^{2} + {4 m}^{2} + {9 n}^{2} + 2 lm - 6 mn + 3 \ln)

{(2 x + 3 y + 5 z)}^{2}

(l - 2 m + 3 n) (l^{2} + {4 m}^{2} + {9 n}^{2} + 2 lm + 6 mn + 3 \ln)

{(2 x - 3 y - 5 z)}^{2}

1. Factorise the following:

2. Factorise the following:

Did you find an error?

23. Two mark exercise problems XII