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keklol1234567890
@keklol1234567890
July 2022
2
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Разложите, если возможно, на множители: х2 -2х – 15.
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Answers & Comments
Evgenia4836
Verified answer
D=4+60=64
x1=(2+8)/2=5
x2=(2-8)/2=-3
(x-5)(x+3)
5 votes
Thanks 8
keklol1234567890
спасибо, у меня так же)
B1A2K3
х2 -2х -15
a=1 b=-2 c=-15 k=-1
D1=1+15=16
x1=
=5
x2=
=-3
По теореме
ax
2
+ bx+ c = a ( x – x
1
) ( x – x
2
)
(x-5)(x+3)
1 votes
Thanks 2
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Answers & Comments
Verified answer
D=4+60=64x1=(2+8)/2=5
x2=(2-8)/2=-3
(x-5)(x+3)
a=1 b=-2 c=-15 k=-1
D1=1+15=16
x1==5
x2==-3
По теореме
ax 2 + bx+ c = a ( x – x1 ) ( x – x2 )
(x-5)(x+3)