droussydessi
droussydessi droussydessi
  • 11-04-2018
  • Mathematics
contestada

wich number is the principal square root of 49

A.7
B.-7
C. 7 -7
D. There is no principled square root

Respuesta :

ali015
ali015 ali015
  • 11-04-2018
A principle square root of a real number that's not negative, such as 49, is the square root of that number that is not negative.

If you take the square root of 49, you get either -7 or 7, since both [tex] 7^{2} [/tex] and [tex] (-7)^{2} [/tex] equal 49. However, the principle square root would be A) 7, since it's not negative.
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