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meliklii
@meliklii
July 2022
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найдите сумму корней уравнения: (х+2)²-4х=13
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dominikalis
X'2+4x+4=13+4x
x'2+4=13
x'2=13-4
x'2=9
x'2=+-√9
x1=3
x2=-3
x1+x2=3+(-3)=0
2 votes
Thanks 1
meliklii
спасибо
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Answers & Comments
x'2+4=13
x'2=13-4
x'2=9
x'2=+-√9
x1=3
x2=-3
x1+x2=3+(-3)=0