Answer:

B. Difference of Squares

1. Factor m²– n².

• is m² a perfect square?

• is n² a perfect square?

• The factor of m² – n² are (m + n)(m – n).

2. Factor 4a² – 9b²

• is 4a² a perfect square?

• is 9b² a perfect square?

• The factors of 4a² – 9b² are (2a – 3b)(2a +3b)

3. Factor 2ײ – 32×.

• Is 2׳ a perfect square?

both term are not a perfect squares but they have 2× as their common factor.

• factor out 2× from 2׳ – 32×.

• is ײ a perfect square? how about 16?

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