lilyum249 lilyum249
  • 23-10-2020
  • Mathematics
contestada

can someone help please ?

can someone help please class=

Respuesta :

20102807
20102807 20102807
  • 23-10-2020

Answer:

yes they are

Step-by-step explanation:

(a-b)² = (a-b)×(a-b) = a²-b²

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notlinseed notlinseed
  • 23-10-2020

Answer:

No they are not

Step-by-step explanation:

squaring that expression will come out to be a^2-2ab+b^2

this is because you are doing (a-b)(a-b), so you have to multiply each term from the first set of parenthesis by each term in the second set of parenthesis.

a^2-ab-ab+b^2

a^2-2ab+b^2

(a-b)^2≠a^2-b^2

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