Bonsoir
A = ( 2 x + 5 )² + ( 5 x - 2 ) ( 2 x + 5 )
= ( 2 x + 5 ) ( 2 x + 5 + 5 x - 2 )
= ( 2 x + 5 ) ( 7x + 3 )
B = ( 3 x - 5 )² - 16 x²
= ( 3 x - 5 - 4 x ) ( 3 x - 5 + 4 x )
= ( - x - 5 ) ( 7 x - 5 )
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Bonsoir
A = ( 2 x + 5 )² + ( 5 x - 2 ) ( 2 x + 5 )
= ( 2 x + 5 ) ( 2 x + 5 + 5 x - 2 )
= ( 2 x + 5 ) ( 7x + 3 )
B = ( 3 x - 5 )² - 16 x²
= ( 3 x - 5 - 4 x ) ( 3 x - 5 + 4 x )
= ( - x - 5 ) ( 7 x - 5 )