SOLUTION: Tutor: Can you help me: How do I simplify this expression using positive exponents? (-2a^-4b^2c^-7) (3^-2a^-2b^-5c^9) I started by -2*9 a^-6b^-3c^2 -18c^2/a^6b^3 bu

Question 84755: Tutor: Can you help me: How do I simplify this expression using positive exponents?
(-2a^-4b^2c^-7) (3^-2a^-2b^-5c^9)
I started by -2*9 a^-6b^-3c^2 -18c^2/a^6b^3
but I got confused about dividing!
Thank you!
Answer by Edwin McCravy(20059) (Show Source): You can put this solution on YOUR website!
Tutor: Can you help me: How do I simplify this expression using positive exponents?
(-2a^-4b^2c^-7) (3^-2a^-2b^-5c^9)
I started by -2*9 a^-6b^-3c^2 -18c^2/a^6b^3
but I got confused about dividing!
Thank you!
Tutor: Can you help me: How do I simplify this expression using positive exponents?
�
Put a 1 under each expression:
�
In the first expression,
Bring the from the top to the bottom as
Bring the from the top to the bottom as
In the second expression,
Bring the from the top to the bottom as
Bring the from the top to the bottom as
Bring the from the top to the bottom as
Leave all the factors with positive exponents on top:
�
Erase the 1's on the bottom of the fractions and
Change the to .

�
Indicate the multiplication of the tops and the bottoms:

Add the exponents of and in the bottom
to get and write the factor first:

Now subtract the exponents of the b's, larger - smaller,
that is, 5-2=3 and place on the bottom because the
larger exponent was on the bottom:

Finally subtract the exponents of the c's, larger - smaller,
that is, 9-7=2 and place on the top because the
larger exponent was on the top:

Edwin
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