Respuesta :

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[tex]3\sqrt7(1-\sqrt7)=3\sqrt7\cdot1-3\sqrt7\cdot\sqrt7=3\sqrt7-3\cdot7=3\sqrt7-21[/tex]

[tex]Used:\ \sqrt{a}\cdot\sqrt{a}=a[/tex]
geminikeller10

Answer:

Simplify the product of 3 divided by  sqrt 7 and 3 subtracting sqrt 7 that you found in the previous step.

is

⇒ 2

Step-by-step explanation:

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