Răspuns :

Loredanaschneidid

[tex] \frac{4 \times 3 \sqrt{5} + 3 \times 7 \sqrt{5} }{4 + 3} = [/tex]

[tex] = \frac{12 \sqrt{5} + 21 \sqrt{5} }{7} = [/tex]

[tex] = \frac{33 \sqrt{5} }{7} [/tex]

ID Alte intrebari