Question

plz answer fast with explanation.... Both questions plzz

Answer 1

1) ( 2 x + 3 )³ + 64

==> ( 2 x + 3 )³ + 4³

Use : a³ + b³ = ( a + b ) ( a² - ab + b² )

==> ( 2 x + 3 + 4 )( ( 2 x + 3 )² - 4 ( 2 x + 3 ) + 4² )

==> ( 2 x + 7 )( 4 x² + 9 + 12 x - 8 x - 12 + 16 )

==> ( 2 x + 7 )( 4 x² + 4 x + 13 )

ANSWER : OPTION ( 2 )

2) ( 1 + a + ab + b ) / ( 1 + a )

==> ( 1 + a + b ( 1 + a ) ) / ( 1 + a )

==> ( 1 + a )( 1 + b ) / ( 1 + a )

==> 1 + b

ANSWER : OPTION ( 2 )

Hope it helps

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Answer 2

explanation.... Both questions plzz