Steply

Simplify √48 / √3

Step by step, with the reason for every step · Dividing square roots · Algebra 1

Step by step

The question

Question: simplify √48 over √3.

√48√3

1 One root

Rule: a root over a root is the root of the fraction.

√a√b = √ab

So we write one root over the fraction.

= √483

48 divided by 3 is 16.

48 ÷ 3 = 16

So we get √16.

= √16

2 Simplify the root

16 is a square number: 4 times 4 is 16.

So √16 is 4.

4 × 4 = 16

So we get 4.

So the answer is 4.

= 4

Careful!

48 divided by 3 is 16.

But the answer is the ROOT of 16.

Don't drop the root.

Careful: not √48√3 = 16 ✗

3 Check

Let's check with a calculator.

The start is about 4.00.

Start: √48√3 ≈ 4.00

The answer is about 4.00 too.

So it is right!

Answer: 4 ≈ 4.00

Let's look back.

First: one root.

Then: simplify the root.

Last: check.

Answer
= 4

Your turn

Try this one yourself, then check:

√45√5
Show the answer
3

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