Expand the expression — task. Mathematics CBSE, Class 8 New.

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(2 + 7 p) (2 - 7 p)

Answer:

The identity used is

{(a + b) (a - b) = i}^{i} - i^{i}

(2 + 7 p) (2 - 7 p)

\(=\)

i - i i^{i}

[Note: Insert constant first and then term with variable. While entering terms, coefficient with sign is followed by the variable.]

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9. Expand the expression