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GIAN555662IN
Answered

B. Product of the sum and difference of two terms:
3. (m +7) (m - 7) =
4. (2x - 5)(2x + 5) =​

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PAT2793IN

Answer:

[tex]3) (m +7) (m - 7) \\ = {m}^{2} \: - 7m + 7m - 49 \\ = {m}^{2} - 49\\ \\

4) (2x - 5)(2x + 5) \\ = {4x}^{2} + 10x - 10x - 25 \\ = 4 {x}^{2} - 25[/tex]

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