To multiply 9√3 by 6√7, we need to multiply the numbers outside the square roots (9 and 6) and multiply the numbers inside the square roots (√3 and √7) separately, and then combine the results.
So, 9 √3 * 6 √7 = (9 * 6) * (√3 * √7)
= 54 * √(3 * 7)
= 54 * √21
Therefore, the product of 9√3 and 6√7 is 54√21.
9 √3 * 6 √7
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