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59347
@59347
July 2022
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3x в квадрате - 7x + 4 =0
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svetazuna
3х² - 7х + 4 = 0,
Д = (-7)² - 4*3*4 = 49 - 48 = 1,
х1 =
(7 + 1) / 2*1 = 8/2
= 4,
х2 =
(7 + 2) / 2*1 = 6/2
= 3
3 votes
Thanks 3
Ума0
(3x-4)*(x-1)
3x-4=0
3x=4
3x/3=4/3
x=3/4
привести x-1 к 0
x-1=0
x=1
решение является результатом 3x-4=0 и x-1=0
x=4/3;1
1 votes
Thanks 0
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Answers & Comments
Д = (-7)² - 4*3*4 = 49 - 48 = 1,
х1 = (7 + 1) / 2*1 = 8/2 = 4,
х2 = (7 + 2) / 2*1 = 6/2 = 3
3x-4=0
3x=4
3x/3=4/3
x=3/4
привести x-1 к 0
x-1=0
x=1
решение является результатом 3x-4=0 и x-1=0
x=4/3;1