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Find the product mentally. (z - 12)(z + 12)
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4 votes
Find the product mentally.
(z - 12)(z + 12)

User Lvsti
by
7.0k points

1 Answer

4 votes
(a-b)(a+b) = a² - b²

(z-12)(z+12) = z² - 12² = z² - 144

Your final answer is z² - 144.
User Steve Maris
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