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Marusiait99
@Marusiait99
August 2021
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m11m
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ОДЗ: 1) 1-2x≥0 2) (1/2)x+5≥0
-2x≥ -1 (1/2)x≥ -5
x≤0.5 x≥ -10
x∈[-10; 0.5]
((1/2)x+5)² =1-2x
(1/4)x²+5x+25-1+2x=0
x²+28x+96=0
D=784-384=400
x₁= (-28-20)/2= -24 - не подходит
x₂=(-28+20)/2= -4
(1/2) *(-4) +5=3
Ответ: 3.
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Answers & Comments
Verified answer
ОДЗ: 1) 1-2x≥0 2) (1/2)x+5≥0-2x≥ -1 (1/2)x≥ -5
x≤0.5 x≥ -10
x∈[-10; 0.5]
((1/2)x+5)² =1-2x
(1/4)x²+5x+25-1+2x=0
x²+28x+96=0
D=784-384=400
x₁= (-28-20)/2= -24 - не подходит
x₂=(-28+20)/2= -4
(1/2) *(-4) +5=3
Ответ: 3.