baconlover240
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  • 02-08-2019
  • Mathematics
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Help! Which step is incorrect!

Help Which step is incorrect class=

Respuesta :

gmany
gmany gmany
  • 02-08-2019

Answer:

(2)

Step-by-step explanation:

Because

[tex]x^2-16=x^2-4^2=(x-4)(x+4)[/tex]  not  [tex]=(x-4)(x-4)[/tex]

This follows from the formula [tex]a^2-b^2=(a-b)(a+b)[/tex]

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