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celinejourdois
@celinejourdois
June 2021
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svp trouver deux nombres a et b dont la difference est 35 et la difference des carrés est 875?????
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caylus
Verified answer
Bonsoir,
a-b=35 (1)
a²-b²=875=>(a+b)(a-b)=875=>a+b=875/25=> a+b=25 (2)
(1)+(2)=> 2a=60=>a=30 et b=25-30=-5
Vérification
a-b=30-(-5)=30+5=35
a²-b²=30²-(-5)²=900-25=875.
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youssef2002
a-b=35 (1)
a²-b²=875=>(a+b)(a-b)=875=>a+b=875/25=> a+b=25 (2)
(1)+(2)=> 2a=60=>a=30 et b=25-30=-5
Vérification
a-b=30-(-5)=30+5=35
a²-b²=30²-(-5)²=900-25=875
0 votes
Thanks 0
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celinejourdois
June 2021 | 0 Respostas
svp de l'aide les droites (AC) et (BD) se coupent en E dans un cercles il y a un triangle AED ABE dont E fait 68degre BEC dont B fait 28 degre EDC mes question sont calculer la messure de l'angle AED puis celle de l'angle ADB justifier??? le point E est il le centre du cercle?? justifier merci a vous
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Lista de comentários
Verified answer
Bonsoir,a-b=35 (1)
a²-b²=875=>(a+b)(a-b)=875=>a+b=875/25=> a+b=25 (2)
(1)+(2)=> 2a=60=>a=30 et b=25-30=-5
Vérification
a-b=30-(-5)=30+5=35
a²-b²=30²-(-5)²=900-25=875.
a²-b²=875=>(a+b)(a-b)=875=>a+b=875/25=> a+b=25 (2)
(1)+(2)=> 2a=60=>a=30 et b=25-30=-5
Vérification
a-b=30-(-5)=30+5=35
a²-b²=30²-(-5)²=900-25=875