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How do you write 18 as a product of prime factors?

Answer 1

Julian Avila

See explanation.

To write a prime decomposition of a number #x# you follow this procedure:

Here it is:

#x=18#

It is an even number, so we can write that: #18=2*9#

#9# is a compound number; it is divisible by a prime number #3#:

#18=2*3*3#

Since every number is now prime, the decomposition is finished:

The product of 2 numbers #3# can be written as a power: #3*3=3^2#, so the final answer can be written as:

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Answer 2

Julian Avila

#18=2xx3xx3#

Divide #18# by the prime number #2#.

#18-:color(red)2=9#

Divide #9# by the prime number #3#.

#9-:color(red)3=color(red)3#

This is as far as you can go.

#18=color(red)2xxcolor(red)3xxcolor(red)3#

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Answer 3

Mila Anderson

#18 = 2xx3xx 3 #

We take 18 and break it down into factors until we reach numbers that are primes.

#18 :rarr 9 and 2#

#18 = 9 xx 2 #

#9# breaks down further into #3 and 3#

#9: rarr 3xx3 #

The prime factors are multiplied together to get a product at the end and together make the answer.

#18 = 2xx3xx3#

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Answer 4

Mila Anderson

To write 18 as a product of prime factors, you can factorize it as 2 × 3^2.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.