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PLEASE HELP ME WITH this question I need help a number one through four could you also explain how you got the answer thank you the person with the best answer will get BRAINLY !!!!!!!20 POINTS

PLEASE HELP ME WITH this question I need help a number one through four could you also explain how you got the answer thank you the person with the best answer class=

Respuesta :

Answer:

1. (c-d)(c+d)

2. (2c-3d(2c+3d)

3. (4ab-5cd)(4ab+5cd)

4. cannot be factorised into difference of two squares

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