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Question

Find the product of:
(i) (5a2b)(5a+2b)(25a24b2)
(ii) (2x23)(2x2+3)

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Solution

(i)(5a2b)(5a+2b)(25a24b2)
=(25a24b2)(25a24b2) [(ab)(a+b)=a2b2]
=(25a24b2)2
=625a4200a2b2+16b4 [(ab)2=a22ab+b2]

(ii)(2x23)(2x2+3)
=4x49

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