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Stevin product Calculate (x + 9) (x + 12): a)x² - 21x - 108 b)x² - 21x + 108 c)x² + 21x + 108 d)x² + 21x - 108 e)x² - 21x - 108

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Answer:

The answer is C.

Step-by-step explanation:

You have to apply Distributive Law :

[tex]a(m + n) = am + an[/tex]

So for this question :

[tex](x + 9)(x + 12) [/tex]

[tex] = x(x) + x(12) + 9(x) + 9(12)[/tex]

[tex] = {x}^{2} + 12x + 9x + 108[/tex]

[tex] = {x}^{2} + 21x + 108[/tex]

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