x^2+8x+16分之x^2-16+x-4分之x

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x^2+8x+16分之x^2-16+x-4分之x
x^2+8x+16分之x^2-16+x-4分之x

x^2+8x+16分之x^2-16+x-4分之x
(x²-16)/(x²+8x+16)+x/(x-4)
=(x-4)(x+4)/(X+4)²+X/(X-4)
=(X-4)/(X+4)+X/(X-4)
=(X-4)²/(X²-16)+X(X+4)/(X²-16)
=(X²-8X+16+X²+4X)/(X²-16)
=(2X²+4X+16)/(X²-16)

x^2+8x+16分之x^2-16+x-4分之x
=(x+4)(x-4)/(x+4)²+x/(x-4)
=(x-4)/(x+4)+x/(x-4)
=[(x-4)²+x(x+4)]/[(x+4)(x-4)]
=[x²-8x+16+x²+4]/[(x+4)(x-4)]
=(2x²-8x+20)/(x²-16)
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