Ответ:
Объяснение:
[tex]\frac{x^2+1-10}{x-3}=\frac{x^2-9}{x-3}= \frac{(x-3)(x+3)}{(x-3)}= x+3[/tex]
57+3=60
[tex]\frac{y+7-2y-2}{y^2-25}=\frac{-y+5}{y^2-25}=\frac{-(y-5)}{(y-5)(y+5)}=-\frac{1}{y+5}[/tex]
-1/(5,7+5)= -1/10,7= -10/107
1) 60
2)[tex]\frac{-10}{107}[/tex]
1) [tex]\frac{x^2+1}{x-3} -\frac{10}{x-3}=\frac{x^2+1-10}{x-3}=\frac{x^2-9 }{x-3} =\frac{x^2-3^2}{x-3}=\frac{(x-3)(x+3)}{x-3} =x+3[/tex]
Подставляем 57
2) [tex]\frac{y+7}{y^2-25} -\frac{2y+2}{y^2-25}=\frac{y+7-2y-2}{y^2-5^2}=\frac{-y+5}{(y-5)(y+5)} =\frac{-(5-y)}{(y-5)(y+5)} =\frac{-1}{y+5}[/tex]
Подставим 5,7
[tex]\frac{-1}{5,7+5}= \frac{-1}{10,7} =\frac{-10}{107}[/tex]
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Verified answer
Ответ:
Объяснение:
[tex]\frac{x^2+1-10}{x-3}=\frac{x^2-9}{x-3}= \frac{(x-3)(x+3)}{(x-3)}= x+3[/tex]
57+3=60
[tex]\frac{y+7-2y-2}{y^2-25}=\frac{-y+5}{y^2-25}=\frac{-(y-5)}{(y-5)(y+5)}=-\frac{1}{y+5}[/tex]
-1/(5,7+5)= -1/10,7= -10/107
Ответ:
1) 60
2)[tex]\frac{-10}{107}[/tex]
Объяснение:
1) [tex]\frac{x^2+1}{x-3} -\frac{10}{x-3}=\frac{x^2+1-10}{x-3}=\frac{x^2-9 }{x-3} =\frac{x^2-3^2}{x-3}=\frac{(x-3)(x+3)}{x-3} =x+3[/tex]
Подставляем 57
57+3=60
2) [tex]\frac{y+7}{y^2-25} -\frac{2y+2}{y^2-25}=\frac{y+7-2y-2}{y^2-5^2}=\frac{-y+5}{(y-5)(y+5)} =\frac{-(5-y)}{(y-5)(y+5)} =\frac{-1}{y+5}[/tex]
Подставим 5,7
[tex]\frac{-1}{5,7+5}= \frac{-1}{10,7} =\frac{-10}{107}[/tex]