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anntu
@anntu
July 2022
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Решите неравенство:
x^2-12x=>2x-12-x^2
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vladimir21199
x^2-12x=>2x-12-x^2
x^2-12x-2x+12+x^2=>0
2x^2-14x+12=>0
x^2-7x+6=>0
D: 49 - 4*6 = 49-24=25
корень из D= 5
x1= 7 + 5 / 2 = 6
x2= 7 - 5 / 2 = 1
2 votes
Thanks 8
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Answers & Comments
x^2-12x-2x+12+x^2=>0
2x^2-14x+12=>0
x^2-7x+6=>0
D: 49 - 4*6 = 49-24=25
корень из D= 5
x1= 7 + 5 / 2 = 6
x2= 7 - 5 / 2 = 1