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Mariago
@Mariago
October 2021
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Решите плиз срочно надо!!!
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mikael2
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1. x-6/5=-1 x=6/5-1= 1/5
2. x²+4x-5=0 по теореме виетта корни -5; 1
3. x≥ -12/3= -4 x≤ 1-3 =-2 min -4
4. x² +3x -18 =0 по Виетту x= -6;3
5. 3x-y = -1
-x+2y=7 → -3x+6y=21
3x -y -3x +6y=20 5y=20
y=4
3x-4= -1
x= 1
6. q=x1*x2=-6*4= -24
7. 6x (x+24)=0 x= -24; 0
8. x²+2x-15=0 по т.Виетта корни -5; 3
9. x+x/9= -10/3 10/9 x= -10/3 x= -10/3*9/10 = - 3
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Answers & Comments
Verified answer
1. x-6/5=-1 x=6/5-1= 1/52. x²+4x-5=0 по теореме виетта корни -5; 1
3. x≥ -12/3= -4 x≤ 1-3 =-2 min -4
4. x² +3x -18 =0 по Виетту x= -6;3
5. 3x-y = -1
-x+2y=7 → -3x+6y=21
3x -y -3x +6y=20 5y=20 y=4 3x-4= -1 x= 1
6. q=x1*x2=-6*4= -24
7. 6x (x+24)=0 x= -24; 0
8. x²+2x-15=0 по т.Виетта корни -5; 3
9. x+x/9= -10/3 10/9 x= -10/3 x= -10/3*9/10 = - 3