SashkaUnicorn SashkaUnicorn
  • 28-04-2017
  • Mathematics
contestada

What does this equal?

What does this equal class=

Respuesta :

katienwatkins
katienwatkins katienwatkins
  • 28-04-2017
Square root both sides :

b^2 = 81
sqrt (b^2) = + sqrt(81)
b = 9

AND

sqrt(b^2) = - sqrt(81)
b= -9

Thus, b = 9 OR b = -9
Answer Link
littlemanfinger littlemanfinger
  • 28-04-2017
i think the answer is 9                                                                                

Answer Link

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