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Help me(5/7x−1/3y)(5/7x+1/3y) |
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Answer» ²-9/25y²(ii)25/49x²-1/9y²Step-by-step EXPLANATION:(i) (2/3x-3/5y) (2/3x+3/5y)Here, a=2/3x and b=3/5yUsing IDENTITY: (a+b)(a-b) = a²-b²We GET, (2/3x)²-(3/5y)²4/9x²-9/25y²(ii) (5/7x−1/3y)(5/7x+1/3y)Here, a=5/7x and b=1/3yUsing identity: (a+b)(a-b) = a²-b²We get, (5/7x)²-(1/3y)²25/49x²-1/9y²Hope it helps you.please MARK me as the brainliest. |
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