The expression of (3x+7y) (3x-7y)
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Answered by
1
Step-by-step explanation:
3x(3x-7y)
=3x²-21xy
7y×(3x-7y)
=21xy-64y²
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Answered by
1
Step-by-step explanation:
(3x+7y ) (3x-7y)
=(3x+7y ) (3x-7y)
=9x^2 - 49y^2
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