11. 14(3y - 5z)3 +7(3y - 5z)2
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14(3y-5z)3+7(3y-5z)2
42(3y-5z)+14(3y-5z)
(42+14)(3y-5z)
56(3y-5z)
168y-280z
sumanbhavana1983:
its wrong
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