answer 7th questions with solution or agar baki me se koi or bhi ate hi to please answer do vo be solution ke sat
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{2m + (-n)} {-3m + (-5)}
=> (2m - n) (-3m - 5)
=> 2m (-3m-5) - n(-3m - 5)
=> -6m² - 10m +3mn + 5 n
=> (2m - n) (-3m - 5)
=> 2m (-3m-5) - n(-3m - 5)
=> -6m² - 10m +3mn + 5 n
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