lexihaywood2610 lexihaywood2610
  • 06-06-2018
  • Mathematics
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Explain how you would factor 9x^2 – 49 show your work and use complete sentences. what is this special type of factoring called?

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Lever85 Lever85
  • 06-06-2018
9x² - 49

(3x)² - (7)²

= (3x + 7)(3x - 7)

This type of factoring is called Difference of Two Squares

where x² - y² = (x + y)(x - y)
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