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igorsorokol14
@igorsorokol14
August 2022
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помогите если можно,заранее спасибо
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Глокси
1)
1) ab-b²/a²-ac *a²-c²/a²-b² = b(a-b)*(a-c)(a+c) / a(a-c)*(a-b)(a+b)=
=b(a+c)/a(a+b)
2)b-c/a+b -b(a+c)/a(a+b)=a(b-c)-b(a+c)/a(a+b)=ab-ac-ab-bc /a(a+b)=
=-ac-bc/a(a+b)=-c(a+b)/a(a+b)=-c/a
2)
1)3/y+2 -2/y-2=3(y-2)-2(y+2) /(y+2)(y-2)=3y-6-2y-4 /(y+2)(y-2)=y-10/y²-4
2)(y²-4)*y-10/y²-4=y-10
3)y-10+5=y-5
1 votes
Thanks 1
igorsorokol14
спасибо большое
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Answers & Comments
1) ab-b²/a²-ac *a²-c²/a²-b² = b(a-b)*(a-c)(a+c) / a(a-c)*(a-b)(a+b)=
=b(a+c)/a(a+b)
2)b-c/a+b -b(a+c)/a(a+b)=a(b-c)-b(a+c)/a(a+b)=ab-ac-ab-bc /a(a+b)=
=-ac-bc/a(a+b)=-c(a+b)/a(a+b)=-c/a
2)
1)3/y+2 -2/y-2=3(y-2)-2(y+2) /(y+2)(y-2)=3y-6-2y-4 /(y+2)(y-2)=y-10/y²-4
2)(y²-4)*y-10/y²-4=y-10
3)y-10+5=y-5