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Hangmansavagd
Hangmansavagd Hangmansavagd
  • 16-08-2016
  • Mathematics
Answered

which of the following ate factors of t^4-81

Verified Answer :

dalendrk
dalendrk dalendrk
  • 16-08-2016

\(Use:\ a^2-b^2=(a-b)(a+b)\\------------------\\t^4-81=(t^2)^2=9^2=(t^2-9)(t^2+9)\\\\=(t^2-3^2)(t^2+9)=(t-3)(t+3)(t^2+9)\)

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