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Sagot :

VINS

bonsoir,

1 - y²   = ( 1 - y ) ( 1 + y )

100 x² - 9 = ( 10 x - 3 ) ( 10 x + 3 )

( t + 3 )² - 16 = ( t + 3  - 4 ) ( t + 3 + 4 ) = ( t - 1 ) ( t + 7 )

( 2 x + 1 )²- 25 = (  2 x + 1 - 5 ) ( 2 x + 1 + 5 ) = ( 2 x - 4 ) ( 2 x + 6 )

INEQUATION

Bonsoir,

Factoriser:

B= 1-y²= (-y+1)(y+1)= - (y-1)(y+1)

C=  100x²-9= (10x)²-3²= (10x-3)(10x+3)

E= illisible

F= (2x+1)²-25= (2x+1)²-5²= (2x+1-5)(2x+1+5)= (2x-4)(2x+6)= 4(x-2)(x+3)

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