Ответ:
Объяснение:
1) 16x²-25=(4x)²-5²=(4x+5)*(4x-5).
2) a-b+c*(a-b)=(a-b)+c*(a-b)=(a-d)*(1+c).
3) (x²-2xy+y²)/(x²-y²)=(x-y)²/((x+y)*(x-y))=(x-y)/(x+y).
4) n*(n-3)/(n²-9)+(1-n)/(n+3)=n*(n-3)/((n-3)*(n+3))+(1-n)/(n+3)=
=n/(n+3)+(1-n)/(n+3)==(n+1-n)/(n+3)=1/(n+3)=1/(-2,5+3)=1/0,5=2.
5) 2¹⁷*3¹⁸/(8⁵*9⁸)=2¹⁷*3¹⁸/((2³)⁵*(3²)⁸)=2¹⁷*3¹⁸/(2¹⁵*3¹⁶)=
=2⁽¹⁷⁻¹⁵⁾*3⁽¹⁸⁻¹⁶⁾=2²*3²=4*9=36.
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Answers & Comments
Ответ:
Объяснение:
1) 16x²-25=(4x)²-5²=(4x+5)*(4x-5).
2) a-b+c*(a-b)=(a-b)+c*(a-b)=(a-d)*(1+c).
3) (x²-2xy+y²)/(x²-y²)=(x-y)²/((x+y)*(x-y))=(x-y)/(x+y).
4) n*(n-3)/(n²-9)+(1-n)/(n+3)=n*(n-3)/((n-3)*(n+3))+(1-n)/(n+3)=
=n/(n+3)+(1-n)/(n+3)==(n+1-n)/(n+3)=1/(n+3)=1/(-2,5+3)=1/0,5=2.
5) 2¹⁷*3¹⁸/(8⁵*9⁸)=2¹⁷*3¹⁸/((2³)⁵*(3²)⁸)=2¹⁷*3¹⁸/(2¹⁵*3¹⁶)=
=2⁽¹⁷⁻¹⁵⁾*3⁽¹⁸⁻¹⁶⁾=2²*3²=4*9=36.
Verified answer
Ответ:
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