Quin és un valor equivalent a l’arrel quadrada de 18? A) 182 B) 2sqrt (3) C) 3sqrt (2) D) abs (18)

Resposta:

C) # 3sqrt (2) #

Explicació:

arrel quadrada de 18

#color (blanc) ("XXX") = sqrt (18) #

#color (blanc) ("XXX") = sqrt (3xx3xx2) #

#color (blanc) ("XXX") = sqrt (3) xxsqrt (3) xxsqrt (2) #

#color (blanc) ("XXX") = 3xxsqrt (2) #

#color (blanc) ("XXX") = 3sqrt (2) #