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qainatafzal0
@qainatafzal0
December 2022
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Étape par étape
Niveau 4
3y²-(3y-2)-4
5a²-2a-(2a²-3a+8)-a+4
-(3x-2)-(2x-1)
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ilona307
Verified answer
3y²-(3y-2)-4 = 3y²-3y+2-4
= 3y²-3y-2
5a²-2a-(2a²-3a+8)-a+4 = 5a²-2a-2a²+3a-8-a+4
= 5a²-2a² -2a+3a-a+4
= 3a²+4
-(3x-2)-(2x-1) = -1x(3x)-(-1)x(-2) - (2x)+1
= -3x -2 -2x+1
= -5x -1
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Verified answer
3y²-(3y-2)-4 = 3y²-3y+2-4= 3y²-3y-2
5a²-2a-(2a²-3a+8)-a+4 = 5a²-2a-2a²+3a-8-a+4
= 5a²-2a² -2a+3a-a+4
= 3a²+4
-(3x-2)-(2x-1) = -1x(3x)-(-1)x(-2) - (2x)+1
= -3x -2 -2x+1
= -5x -1