Exemplar Exercise Problems VIII — task. Mathematics CBSE, Class 9.

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Factorise the following:

1.

$9y^2 – 66yz + 121z^2=$

2.

$(2x+\frac{1}{3})^2-(x-\frac{1}{2})^2=$

Answer variants:

$(3x-\frac{1}{6})(x+\frac{5}{6})$

$(3y-11z)(3y-11z)$

$(3y+11z)(3y+11z)$

$(3x-\frac{1}{6})(x-\frac{5}{6})$

$(3y+11z)(3y-11z)$

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