Ответ:
1)
(2a²-ab)/(4a²-4ab+b)=a(2a-b)/(2a-b)²=a/(2a-b)
a=1/2, b=-3
a/(2a-b)=1/2/(2*1/2-(-3))=1/2/(1+3)=1/8
2) (9y²-x²)/(x²-6xy+9y²)=(3y-x)(3y+x)/(x-3y)²=-(3y+x)/(x-3y)=(3y+x)/(3y-x)
x=-2, y=2/3
(3y+x)/(3y-x)=(3*2/3-2)/(3*2/3+2)=0
Объяснение:
(2а²-ab)/(4a²-4ab+b²)=a(2a-b)/(2a-b)²=a/(2a-b)=(1/2)/(1+3)=0,125
(9y²-x²)/(x²-6xy+9y²=(3y-x)(3y+x)/(x-3y)²=-(x-3y)(3y+x)/(x-3y)²=
=(-3y-x)/(x-3y)=(-3*2/3 -(-2))/(-2-3*2/3)=0
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Answers & Comments
Ответ:
1)
(2a²-ab)/(4a²-4ab+b)=a(2a-b)/(2a-b)²=a/(2a-b)
a=1/2, b=-3
a/(2a-b)=1/2/(2*1/2-(-3))=1/2/(1+3)=1/8
2) (9y²-x²)/(x²-6xy+9y²)=(3y-x)(3y+x)/(x-3y)²=-(3y+x)/(x-3y)=(3y+x)/(3y-x)
x=-2, y=2/3
(3y+x)/(3y-x)=(3*2/3-2)/(3*2/3+2)=0
Объяснение:
Объяснение:
(2а²-ab)/(4a²-4ab+b²)=a(2a-b)/(2a-b)²=a/(2a-b)=(1/2)/(1+3)=0,125
(9y²-x²)/(x²-6xy+9y²=(3y-x)(3y+x)/(x-3y)²=-(x-3y)(3y+x)/(x-3y)²=
=(-3y-x)/(x-3y)=(-3*2/3 -(-2))/(-2-3*2/3)=0