Fatorando a expressão 4a2 – 9b2, obtemos:?

Fatorando a expressão 4a ao quadrado – 9b ao quadrado obtemos

a) ( 2a − 3b )2

( 2a − 3b ) ao quadrado

.......

b) ( 2a + 3b )2

( 2a + 3b )ao quadrado

...........

c) ( 2a + 3b )( 2a − 3b )

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