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tuantuantuan
@tuantuantuan
July 2022
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x^2-7x-18=0 решите, пожалуйста
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Lesben
Verified answer
X²-7x-18=0
D=49+72=121,√D=√121=11
x1=(7+11)/2=18/2=9
x2=(7-11)/2=-4/2=-2
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Answers & Comments
Verified answer
X²-7x-18=0D=49+72=121,√D=√121=11
x1=(7+11)/2=18/2=9
x2=(7-11)/2=-4/2=-2