How do you write the prime factorization of #-120r^2st^3#?

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# -2 xx 2 xx 2 xx 5 xx 3 xx r xx r xx s xx t xx t xx t#

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Prime factorisation means to write the number or expression of only prime factors.
It is also sometimes called expanded notation.

#-120r^2st^3# is made up of:

# -2 xx 2 xx 2 xx 5 xx 3 xx r xx r xx s xx t xx t xx t#

If you multiply those together you get #-120r^2st^3#

Notice that each factor is prime because it cannot be broken down further.

(#1# is not prime, so do not use it)

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