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SOFIYA111111
@SOFIYA111111
October 2021
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решите неравенство 7-3х-4х^>0
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DariosI
Verified answer
7-3х-4х²>0
4x²+3x-7<0
D=9+4*4*7=121
x₁=(-3-11)/8=-1.75
x₂=(-3+11)/8=1
4(x+1.75)(x-1)<0
x∈(-1.75; 1)
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Answers & Comments
Verified answer
7-3х-4х²>04x²+3x-7<0
D=9+4*4*7=121
x₁=(-3-11)/8=-1.75
x₂=(-3+11)/8=1
4(x+1.75)(x-1)<0
x∈(-1.75; 1)