13.
(i) (x + 1)(x - 1)(x2 +1)
(ii) (x - 3)(x+3)(x2 +9)
(W) (3x – 2y)(3x + 2y)(9x2 +4y?)
(iys (2p+3)(2p-3)(4 p’ +9)
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Answer:
Step-by-step explanation:
Simply open the bracket it's no big deal.
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