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14-09-2020
Mathematics

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find (f+g)(9) if f(x)=2x2-2x+25 and g(x)=6x2+7x-13

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Аноним Аноним

14-09-2020

Answer:

3,297

Step-by-step explanation:

[tex]2(9)^2 - 2(9) + 25 + 6(9)^2 + 7(9) - 13\\18^2 - 18 + 25 + 54^2 + 63 - 13\\324 - 18 + 25 + 2,916 + 63 - 13\\331 + 2,966\\3,297[/tex]

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