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ringamer1337
@ringamer1337
June 2022
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выполнить умножение
1. (a-x)(x+a)
2.(1+p)(p-1)
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Kirill754
2sqrt(xa)+x+a=1-(x+a)2sqrt(xa)=1-2(x+a)4xa=1+4(x+a)^2-4(x+a)1-4(x+a)+4x^2+4a^2+4ax=04x^2+4x(a-1)+4a^2-4a=0x^2+x(a-1)+a(a-1)=0D=(a-1)^2-4a(a-1)=a^2-2a+1-4a^2+4a=2a-3a^2+1=-(a-1)(3a+1)x=1/2*[(1-a)+-sqrt[(3a+1)(1-a)]]2a-3a^2+1>=0
-1/3<=a<=1
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Thanks 0
Ксюняkek
2sqrt(xa)+x+a=1-(x+a)2sqrt(xa)=1-2(x+a)4xa=1+4(x+a)^2-4(x+a)1-4(x+a)+4x^2+4a^2+4ax=04x^2+4x(a-1)+4a^2-4a=0x^2+x(a-1)+a(a-1)=0D=(a-1)^2-4a(a-1)=a^2-2a+1-4a^2+4a=2a-3a^2+1=-(a-1)(3a+1)x=1/2*[(1-a)+-sqrt[(3a+1)(1-a)]]2a-3a^2+1>=0-1/3<=a<=1
Ксюняkek
ЧТО ЭТО!!
Ксюняkek
???
Ксюняkek
1) (a-x)(x+a)=a
²
-x
²
2) (1+p)(p-1)=p
²
-1
2 votes
Thanks 1
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Answers & Comments
2) (1+p)(p-1)=p²-1