7001335 7001335
  • 01-04-2020
  • Mathematics
contestada

x2-81 Factor each polynomial

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altavistard
altavistard altavistard
  • 02-04-2020

Answer:

Step-by-step explanation:

Recall that the "difference of two squares" occurs frequently and that there is a formula for factoring it:

a^2 - b^2 = (a - b)(a + b)

Therefore,

x^2 - 81 = (x - 9)(x + 9).

x2 is incorrect; write x^2 or x² in its place.

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