!!!!!! пж помогите срочно !!!!!!. Created by goshakabanov4. algebra-ru

Тождество доказано2)x | -2 | - 1 | 0 | 1 | 2 |y | - 4 | - 1 0 | -1 | - 4 |

!!!!!! пж помогите срочно !!!!!!...

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!!!!!! пж помогите срочно !!!!!!

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$1+\frac{a-4}{a-3}-\frac{a}{a+4}-\frac{7a}{a^{2}+a-12 }=1+\frac{a-4}{a-3}-\frac{a}{a+4}-\frac{7a}{(a-3)(a+4)}=\frac{a^{2}+a-12+a^{2}-16-a^{2}+3a-7a}{a^{2}+a-12 }=\frac{a^{2}-3a-28 }{a^{2}+a-12 } =\frac{(a-7)(a+4)}{(a-3)(a+4)}=\frac{a-7}{a-3}\\\\\frac{a-7}{a-3}=\frac{a-7}{a-3}$

Тождество доказано

x | -2 | - 1 | 0 | 1 | 2 |

y | - 4 | - 1 0 | -1 | - 4 |

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