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Find the product (a+4b)(2a-b)
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(a+4b)(2a-b)

User Jbk
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(a+4b)(2a-b)

Using FOIL

= 2a^2 -ab + 8ab - 4b^2
= 2a^2 + 7ab - 4b^2

hope it helps
User Jfs
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