What number multiplied by itself equals 665?

Here we will answer: What number multiplied by itself gives 665? In other words, what number times itself will equal 665?

We have identified many different ways of getting the answer to this question:

Algebra Method:
Make an algebra equation and solve for x:

x • x = 665
x ≈ 25.788

Square Root Method:
Take the square root of 665 to get the answer:

√665 ≈ 25.788

Exponent Method:
Make the base 665 and the exponent 0.5 to get the answer:

665^0.5 ≈ 25.788

There you go! Now you know how to calculate "What number multiplied by itself equals 665?"

The bottom line is that 25.788 times itself equals approximately 665 as illustrated here:

25.788 x 25.788 ≈ 665

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The answer on this page is rounded to the nearest thousandth, if necessary.