SashkaUnicorn
SashkaUnicorn
28-04-2017
Mathematics
contestada
What does this equal?
Respuesta :
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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