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Daca a=radical 12si b=radical 27 atunci a•b

Răspuns :

[tex] \sqrt{12}* \sqrt{27}= \sqrt{12*27}= \sqrt{324}= \sqrt{18 ^{2} }=18 [/tex]
a = √12 = 2√3
b = √27 = 3√3
a * b = 2√3 * 3√3 = 6√9 = 6 * 3 = 18