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Inga [223]
3 years ago
14

PLEASE HELP!!!!! Factorize x^2 - 9

Mathematics
1 answer:
Margaret [11]3 years ago
3 0

Answer:

x^2 - 9 = x^2 - 3^2\\\\(a^2 - b^2) = (a-b)(a+b)\\\\x^2 - 3^2=(x-3)(x+3)

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