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@logvinyk1p3msqk
December 2021
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50 балов за рушения 5.15-5.20
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lexeritto
!!!!!!!!!!!!.!!!!!!!!!!!!
1 votes
Thanks 1
m11m
Verified answer
5.15 B) D= -143 => нет корней
5.16
y=3x-17 (из 1)
2x+3(3x-17)=-7
2x+9x-51=-7
11x=44
x=
4
y=3*4-17=12-17=
-5
x=4; y=-5
5.17 Г) Минус изменит знак с > на <
5.18
-1-1=3x+2x
5x=-2
x=-2/5
1 votes
Thanks 2
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Answers & Comments
Verified answer
5.15 B) D= -143 => нет корней5.16
y=3x-17 (из 1)
2x+3(3x-17)=-7
2x+9x-51=-7
11x=44
x=4
y=3*4-17=12-17=-5
x=4; y=-5
5.17 Г) Минус изменит знак с > на <
5.18
-1-1=3x+2x
5x=-2
x=-2/5