Question

1) Give a simple form. 3√7 + 7√63 - √7 for explain​

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

$= > 7 \sqrt{63} = 7 \sqrt{3 \times 3 \times 7}= 21 \sqrt{7} \\ \\ = > 3 \sqrt{7} + 7 \sqrt{63} - \sqrt{7} \\ = 3 \sqrt{7} + 21 \sqrt{7} - \sqrt{7} \\ = (3 + 21 - 1) \sqrt{7} \\ = 23 \sqrt{7}$