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2014-04-22T17:57:06-03:00
A) 3ax³ - 2ax =1x²
b) \frac{4}{15}  p^{4} q^{3}
c) \frac{12}{4} m^{2}n^{3}
d)(-7 x^{2})
e) \frac{-4}{7}f^{3}g^{5}
f)(-  \frac{4}{25} a^{4}d^{6} )
g)(- p^{6} qr^{9})
h)(-7k^{-3}m^{2})
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