20 POINTS URGENT!!!!!!!!!!.... Pergunta de ideia deLareinedesneiges

Lareinedesneiges @Lareinedesneiges

June 2021 1 121 Report

20 POINTS URGENT!!!!!!!!!!

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cloclo44 1- D= $24 x^{2} -84x+6x-21-4 x^{2} +28x-49$
D= $20 x^{2}-50x+70$

3- Pour $x$ =2
D= 20x2² - 50x2 +70
D= 20x4-100+70
D=80-100+70
D=50

Pour $x$ =-1
D= 20x(-1)² -50x(-1)+70
D= 20+50+70
D=140

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