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soulay934
@soulay934
January 2021
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Factoriser 9x au carré +9x
Factoriser x au carré +10x+25
Factoriser 4x au carré -4x+1
Factoriser (2x+3) au carré + (2x+3)×(7x-2)
Merci !
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gcnew81
Verified answer
Salut ....
1/ 9x² + 9x
9 ( x² + x )
9 [ x ( x + 1 ) ]
9x ( x + 1 )
2/
x²+10x+25 -> Forme a²+2ab+b²
(x+5)² -> Forme (a+b)²
3/
4x²-4x+1 -> Forme a²-2ab+b²
( 2x - 1 )² -> Forme (a-b)²
4/
(2x+3)² + (2x+3)(7x-2)
Facteur commun (2x+3)
(2x+3) [ (2x+3) + (7x-2)]
(2x+3)[ 2x+3+7x-2 ]
(2x+3)(9x+1)
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Thanks 2
soulay934
Merci beaucoup bonne continuation
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Verified answer
Salut ....1/ 9x² + 9x
9 ( x² + x )
9 [ x ( x + 1 ) ]
9x ( x + 1 )
2/
x²+10x+25 -> Forme a²+2ab+b²
(x+5)² -> Forme (a+b)²
3/
4x²-4x+1 -> Forme a²-2ab+b²
( 2x - 1 )² -> Forme (a-b)²
4/
(2x+3)² + (2x+3)(7x-2)
Facteur commun (2x+3)
(2x+3) [ (2x+3) + (7x-2)]
(2x+3)[ 2x+3+7x-2 ]
(2x+3)(9x+1)