Предмет: Математика, автор: jhajqocyaowoqc

помогите, пожалуйста, решить задание!
не могу понять, как это сделать)

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Ответы

Автор ответа: sedinalana

1)(4x+1)/(2x+5)(x-2)-4/(x-2)(x+2)=[(4x+1)(x+2)-4(2x+5)]/[(2x+5)(x²-4)]=
(4x²+8x+x+2-8x-20)/[(2x+5)(x²-4)]==(4x²+x-18)//[(2x+5)(x²-4)]=
(4x+9)(x-2)//[(2x+5)(x-2)(x+2)]=(4x+9)/[(2x+5)(x+2)]
2)(4x+9)/[(2x+5)(x+2)]*2x(2x+5)/(4x+9)=2x/(x+2)
3)2x/(x+2)+4/(x+2)=(2x+4)/(x+2)=2(x+2)/(x+2)=2

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