How do you evaluate $sqrt(x+7)$ when x = 9?

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Answer 1 · 2015-10-17T04:08:37

$=color(blue)(4$

The expression is $sqrt(x+7)$ , and the value for the variable $x$ given is $9$ .

Substituting the same:

$sqrt(x+7)= sqrt(color(blue)(9)+7$

$=sqrt16$

$=sqrt(2^2*2^2)$

$=color(blue)(4$

How do you evaluate sqrt(x+7)sqrt(x+7) when x = 9?