Ответ:
Объяснение:
3/(a-2) -(a+3)/(4-a²) +(3a+1)/(a²-4a+4)=3/(a-2) +(a+3)/((a-2)(a+2)) +(3a+1)/(a-2)²=(3(a-2)(a+2)+(a+3)(a-2)+(3a+1)(a+2))/((a-2)²(a+2))=(3(a²-4)+a²-2a+3a-6+3a²+6a+a+2)/((a-2)²(a+2))=(3a²-12+4a²+8a-4)/((a-2)²(a+2))=(7a²+8a-16)/((a-2)²(a+2))
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Ответ:
Объяснение:
3/(a-2) -(a+3)/(4-a²) +(3a+1)/(a²-4a+4)=3/(a-2) +(a+3)/((a-2)(a+2)) +(3a+1)/(a-2)²=(3(a-2)(a+2)+(a+3)(a-2)+(3a+1)(a+2))/((a-2)²(a+2))=(3(a²-4)+a²-2a+3a-6+3a²+6a+a+2)/((a-2)²(a+2))=(3a²-12+4a²+8a-4)/((a-2)²(a+2))=(7a²+8a-16)/((a-2)²(a+2))