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13-06-2021
Mathematics

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If d(x) = x2 - 7x - 7, find d(x - 1).

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cass184 cass184

13-06-2021

Answer: x^2-9x+1

Step-by-step explanation:

x^2-7x-7 d(x-1)

(you would just replace x to (x-1)

(x-1)^2-7(x-1)-7

(solve by square rooting (x-1)(x-1) then foil)

x^2-9x+1

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