Question

Calcule os seguintes produtos notáveis:

( x + 3y )2

( 7x + 1 )2

( 3x + 2y )2

( a5 + 2bc )2

( 7x – 4 )2

( 6a – b )2

( 3a – 4b )2

( x – xy )2

( 3a + x ) . ( 3a – x )

( x + 5p ) . ( x – 5p )

( x2 – 7y ) . ( x2 + 7y )

( 10 – ab4 ) . ( 10 + ab4 )

Answer 1

Resposta:

( x + 3y )² = x² + 6xy + 9y²

( 7x + 1 )² = 49x² + 14x + 1

( 3x + 2y )² = 9x² + 12xy + 4y²

 

( a^5 + 2bc )² = a^10 + 4a^5bc + 4b²c²

( 7x – 4)² = 49x² - 56x + 16

( 6a – b)² = 36a² - 12ab + b²

( 3a – 4b )² = 9a² - 24ab + 16b²

( x – xy )² = x² - 2x²y + x²y²

( 3a + x ) . ( 3a – x ) = 9a² - x²

( x + 5p ) . ( x – 5p ) = x² - 25p²

( x² – 7y ) . ( x² + 7y ) = x^4 - 49y²

( 10 – ab4 ) . ( 10 + ab4 ) = 100 - a²b^8