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542362375582
@542362375582
July 2022
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найдите два числа сумма,которых равна 17,а их произведение равно 72
спасибо:з
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Sonya14052003
9 и 8 1) 9+8=17; 2) 9*8=72
8 votes
Thanks 13
Lesben
X+y=17, x.y=72
9+8=17, 9.8=72
Otvet: 9,8.
x=17-y, (17-y)y=72, 17y-y²=72, y²-17y+72=0,D=289-288=1,√D=√1=1
y1=(17+1)/2=9, y2=(17-1)/2=8
x1=17-9=8, x2=17-8=9
12 votes
Thanks 11
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Answers & Comments
9+8=17, 9.8=72
Otvet: 9,8.
x=17-y, (17-y)y=72, 17y-y²=72, y²-17y+72=0,D=289-288=1,√D=√1=1
y1=(17+1)/2=9, y2=(17-1)/2=8
x1=17-9=8, x2=17-8=9