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Evaluating Area When Side Is a Variable

Simplified fo...

Question

Simplified for of $(3 x + 5) (x - 4)$ has how many terms?

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Solution

$(3 x + 5) (x - 4) = 3 x (x - 4) + 5 (x - 4)$
(using distributive property)
$= 3 x^{2} - 12 x + 5 x - 20 = 3 x^{2} - 7 x - 20$
So, it has 3 terms.

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Evaluating Area When Side Is a Variable

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