Question

Use the suitable identity to find each of the following products:-
$(2x + 5y) (2x - 5y)$
$(3a - 6c) (3a + 6c)$
$(x + 4) (x - 4)$
$(3x + 5y) (3x - 5y)$
$(a - c) (a + c)$
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Answer 1

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