Question

Which of the following is equal to √16 x 4

A. √16 x √4
B. 32
C. √16/4
D. 64

Answer 1

None

Explanation:

Let's clarify that a radical symbol beside a number means what number squared (or to the power of 2) can give me the number in the symbol.

In this case it would be 4 because

`4*4=16`

A method I use is to find the square root is dividing the number in the radical symbol 2 times

First by the original number, and then by the product of the last equation. It will not always work, but it works in some cases like this one.

`(16)/(2) = 8\\ \\(8)/(2)=4\\ \\√(16)=4`

Second step, multiply 4 by 4, which equals 16.

Since the square root of 16 is 4, you can substitute 4 in the rest of the equations instead of the radical expression.

None of the following equations equal 16, which means none of the following equations if equal to
`√(16) *4`