Reduce the following expressions — task. Mathematics State Board, Class 10.

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(i)

$\frac{-280 y^{5}}{20 y^{2}}$

$=$

${i i}^{i}$ .

(ii) Reduce

$\frac{31 a^{6} b^{4}}{4 b^{2}}$

$=$

$\frac{i}{i} i^{i} i^{i}$ .

[Note: Insert coefficient with a sign(if there is any negative) followed by variables in ascending order with powers.]

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