bonjour
2 x ( 4 - 7 x ) + ( 7 x + 5 ) ( 2 x - 6)
= 8 x - 14 x² + 14 x² - 42 x + 10 x - 30
= - 24 x - 30
Bonjour,
Développer :
2x (4 - 7x) + (7x + 5) (2x - 6)
= 8x - 14x² + 14x² - 42x + 10x - 30
= - 14x² + 14x² - 42x + 8x + 10x - 30
= - 24x - 30.
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bonjour
2 x ( 4 - 7 x ) + ( 7 x + 5 ) ( 2 x - 6)
= 8 x - 14 x² + 14 x² - 42 x + 10 x - 30
= - 24 x - 30
Verified answer
Bonjour,
Développer :
2x (4 - 7x) + (7x + 5) (2x - 6)
= 8x - 14x² + 14x² - 42x + 10x - 30
= - 14x² + 14x² - 42x + 8x + 10x - 30
= - 24x - 30.