tallydylan tallydylan
  • 12-11-2019
  • Mathematics
contestada

4x^2=81 how do I figure this out​

Respuesta :

nevayaredwood
nevayaredwood nevayaredwood
  • 12-11-2019

Answer:

x = ± 9/2

Step-by-step explanation:

isolate the

x

2

term , by dividing by 4

hence  

x

2

= 81/4⇒

x

=

±

√

81

4

=

±

9

2

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