Product with suitable identity :
(a) (5x + 7) (5x - 7)
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Answer:
- 24 x is the answer
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Identity: (a+b) (a-b) =a^2-b^2
= (5x+7) (5x-7) = 5x^2-7^2 = 25x^2 -49
= (5x+7) (5x-7) = 5x^2-7^2 = 25x^2 -49
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