ahmadalaska907
ahmadalaska907 ahmadalaska907
  • 02-08-2020
  • Mathematics
contestada

are these two expressions equal? (q-r)^2 and q^2-r^2?????

Respuesta :

09pqr4sT
09pqr4sT 09pqr4sT
  • 02-08-2020

Answer:

[tex]\boxed{\sf No}[/tex]

Step-by-step explanation:

[tex](q-r)^2[/tex]

Expand brackets.

[tex](q-r)(q-r)[/tex]

[tex]q^2 -rq -rq+r^2[/tex]

Combine like terms.

[tex]q^2 -2rq+r^2[/tex]

The expression is not equal to [tex]q^2 -r^2[/tex].

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Yisrael777
Yisrael777 Yisrael777
  • 02-08-2020

Answer:

Yes, they are.

Step-by-step explanation:

[tex](q - r) {}^{2} =( q) {}^{2} - (r) {}^{2} = q {}^{2} - r {}^{2} [/tex]

[tex](q - r) {}^{2} = q {}^{2} - r {}^{2} [/tex]

Hope this helps ;) ❤❤❤

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