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Katen [24]
4 years ago
6

What are the factors of x^2 - 81 (X + 9)(x -9) (x-9)(x -9) (x + 3)(x - 27) Prime

Mathematics
2 answers:
vazorg [7]4 years ago
7 0

Answer:

A. x-9 and x+9 because these are perfect squares. 9 times -9 is -81. x times x is x^2. 9 + -9 is 0

Evgen [1.6K]4 years ago
3 0
(x-9)(x+9)

x^2-81

Write the number in exponential form with an exponent of 2

x^2-9^2

Use a^2-b^2=(a-b)(a+b)
(x-9)(x+9)
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