Determine the resultant expression — task. Mathematics CBSE, Class 7.

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Multiply the expressions

25 a^{2} - b^{2} + 31

and

65 a^{2} + b^{2} + 39

, then determine the resultant expression?

The resultant expression of (

25 a^{2} - b^{2} + 31

) (

65 a^{2} + b^{2} + 39

) \(=\)

i + i^{i} - i^{i} - i i^{i} i^{i} + i i^{i} + i

[Note: Insert numbers, variables and their exponents in separate windows].

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16. Determine the resultant expression