[tex]a\sqrt{5}=3\sqrt{210}\,|\div\sqrt{5}\\\\\frac{a\sqrt{5}}{\sqrt{5}}=\frac{3\sqrt{210}}{\sqrt{5}}\\\\\boxed{a=3\sqrt{42}}[/tex]
Odpowiedź D.
Odpowiedź:
Szczegółowe wyjaśnienie:
[tex]\displaystyle a\sqrt{5}=3\sqrt{210} \\\\a=3*\frac{\sqrt{210} }{\sqrt{5} } =3\sqrt{42}[/tex]
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[tex]a\sqrt{5}=3\sqrt{210}\,|\div\sqrt{5}\\\\\frac{a\sqrt{5}}{\sqrt{5}}=\frac{3\sqrt{210}}{\sqrt{5}}\\\\\boxed{a=3\sqrt{42}}[/tex]
Odpowiedź D.
Odpowiedź:
Szczegółowe wyjaśnienie:
[tex]\displaystyle a\sqrt{5}=3\sqrt{210} \\\\a=3*\frac{\sqrt{210} }{\sqrt{5} } =3\sqrt{42}[/tex]