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Sagot :

VINS

bonsoir

3 √ 5 + 3 √125

= 3 √5 + 3 √5 * √25

= 3 √5 + 15 √5

 =  18 √5

☺ SALUT ☺

Simplification de [tex] 3\sqrt{5} + 3\sqrt{125}[/tex] :

[tex] \;3\sqrt{5} + 3\sqrt{125}[/tex]

•[tex] \;3\sqrt{5} + 3\sqrt{5 \times 25}[/tex]

•[tex] \;3\sqrt{5} + 3\sqrt{5 \times {5}^{2}}[/tex]

•[tex] \;3\sqrt{5} + (3\times 5) \sqrt{5}[/tex]

•[tex] \;3\sqrt{5} + 15\sqrt{5}[/tex]

•[tex] \;(3 + 15) \sqrt{5}[/tex]

•[tex] \;\boxed{\boxed{18\sqrt{5}}}[/tex]✅

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