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49/9=16/x^2 ajutor :o3



Răspuns :

[tex]\frac{49}{9}=\frac{16}{x^2} \\ \\ x^2= \frac{9*16}{49} \\ \\ \sqrt{x^2}= \sqrt{\frac{9*16}{49}} \\ \\ |x|= \frac{3*4}{7}=\frac{12}{7} \\ \\ \boxed{x= \{-\frac{12}{7};\frac{12}{7}\}}[/tex]