Steply

Simplify √60 / √5

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

Step by step

The question

Question: simplify √60 over √5.

√60√5

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.

= √605

60 divided by 5 is 12.

60 ÷ 5 = 12

So we get √12.

= √12

2 Simplify the root

Now we make √12 simpler, like in the lesson on square roots.

The biggest square that goes into 12 is 4: 12 divided by 4 is 3.

Square numbers: 4
12 ÷ 4 = 3 ✓

So √12 is √4 times √3.

= √4 × √3

√4 is 2, because 2 times 2 is 4.

2 × 2 = 4

So we get 2√3.

So the answer is 2√3.

= 2√3

Careful!

60 divided by 5 is 12.

But the answer is the ROOT of 12.

Don't drop the root.

Careful: not √60√5 = 12 ✗

3 Check

Let's check with a calculator.

The start is about 3.46.

Start: √60√5 ≈ 3.46

The answer is about 3.46 too.

So it is right!

Answer: 2√3 ≈ 3.46

Let's look back.

First: one root.

Then: simplify the root.

Last: check.

Answer
= 2√3

Your turn

Try this one yourself, then check:

√56√2
Show the answer
2√7

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