# How do you simplify #sqrt(9x^4)#?

##### 1 Answer

Apr 29, 2016

#### Answer:

#### Explanation:

Multiply any number by 1 and you do not change that number's value. I am including the value 1 just to demonstrate a process.

So write as:

Taking all squared values outside the square root removing the square. For

But

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This trick of multiply by 1 is used in higher maths when you have