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dasha471999
@dasha471999
August 2022
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Решите уравнение.
2(x^2+1)+5x=0
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regina12022
Verified answer
2*(х²+1)+5х=0
2х²+2+5х=0
2х²+5х+2=0
D=5²-4*2*2=25-16=9
х₁=(-5+√9):2*2=(-5+3):4=-2:4=-0,5
х₂=(-5-√9):2*2=(-5-3):4=-8:4=-2
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Answers & Comments
Verified answer
2*(х²+1)+5х=02х²+2+5х=0
2х²+5х+2=0
D=5²-4*2*2=25-16=9
х₁=(-5+√9):2*2=(-5+3):4=-2:4=-0,5
х₂=(-5-√9):2*2=(-5-3):4=-8:4=-2