Evaluate sqrt7x(sqrtx-7sqrt7). show your work

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Step-by-step explanation:

First we will distribute square root of 7x to each value inside the parentheses:

When you multiply two of the same square roots with each other, they just equal their square (the number inside the square root box). So, when you multiply square root of x by itself, you get x, and when you multiply square root of 7 by itself, you get 7.

You take x out of the square root, but leave 7.

You take 7 out of the square root but multiply it to the 7 outside of the square root so you get