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01-10-2020
Mathematics

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Write an equivalent expression for (x - 11)(x + 9).

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01-10-2020

Answer:

x²-2x-99

Step-by-step explanation:

(x-11)(x+9) - foil method

x times x = x squared

x times 9 = 9x

-11 times x = -11x

-11 times 9 = -99

x squared + 9x + 11x + -99

x squared-2x-99

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