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ruslanruslan1
@ruslanruslan1
July 2022
1
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1) х^-3х-4=0
2) х^-2х-8=0
3) 10+(х-5)=2х
4) 11-х=22
5) 1/2+3/4=
6) 3/2умножить1/6=
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andreevnaelina
1) х^-3х-4=0
D=9+16=25=5
x1,2=3+-5/2
x1=4 x2=-1
x^-3x-4=0
(x-4)(x+1)=0
2) x^-2x-8=0
D=4+32=36=6
x1,2= 2+-6/2
x1=4 x2=-2
x^-2x-8=0
(x-4)(x+2)=0
3)10+(x-5)=2x
10+x-5=2x
x-2x=5-10
-x=-5
x=5
4) 11-x=22
-x=22-11
-x=11
x=-11
5) 1/2 +3/4=2+3/4=5/4=1целая 1/4
6 )3/2×1/6=1/2×1/2=1/4
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ruslanruslan1
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Answers & Comments
D=9+16=25=5
x1,2=3+-5/2
x1=4 x2=-1
x^-3x-4=0
(x-4)(x+1)=0
2) x^-2x-8=0
D=4+32=36=6
x1,2= 2+-6/2
x1=4 x2=-2
x^-2x-8=0
(x-4)(x+2)=0
3)10+(x-5)=2x
10+x-5=2x
x-2x=5-10
-x=-5
x=5
4) 11-x=22
-x=22-11
-x=11
x=-11
5) 1/2 +3/4=2+3/4=5/4=1целая 1/4
6 )3/2×1/6=1/2×1/2=1/4