怎么算的,过程
3个回答
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解:先化简。
(x^1/2-2^1/2+(x-2)^1/2)/(x^2-4)^1/2
=(x^1/2-2^1/2+(x-2)^1/2)/[(x+2)(x-2)]^1/2
=(x^1/2-2^1/2+(x-2)^1/2)/(x+2)^1/2(x-2)^1/2
=(x^1/2-2^1/2)/(x+2)^1/2(x-2)^1/2+1/(x+2)^1/2
=(x^1/2-2^1/2)/(x+2)^1/2(x-2)^1/2+1/(2+2)^1/2
=(x^1/2-2^1/2)/(x+2)^1/2(x-2)^1/2+1/2
=(x^1/2-2^1/2)/(x-2)^1/2x1/(x+2)^1/2+1/2
=(x^1/2-2^1/2)/(x-2)^1/2x1/(2+2)^1/2+1/2
=(x^1/2-2^1/2)/(x-2)^1/2x1/2+1/2
=[1/2x^(-1/2)-0]/[1/2(x-2)^(-1/2)x1]x1/2+1/2
=1/2x^(-1/2)/1/2(x-2)^(-1/2)x1/2+1/2
=x^(-1/2)/(x-2)^(-1/2)x1/2+1/2
=
(x^1/2-2^1/2+(x-2)^1/2)/(x^2-4)^1/2
=(x^1/2-2^1/2+(x-2)^1/2)/[(x+2)(x-2)]^1/2
=(x^1/2-2^1/2+(x-2)^1/2)/(x+2)^1/2(x-2)^1/2
=(x^1/2-2^1/2)/(x+2)^1/2(x-2)^1/2+1/(x+2)^1/2
=(x^1/2-2^1/2)/(x+2)^1/2(x-2)^1/2+1/(2+2)^1/2
=(x^1/2-2^1/2)/(x+2)^1/2(x-2)^1/2+1/2
=(x^1/2-2^1/2)/(x-2)^1/2x1/(x+2)^1/2+1/2
=(x^1/2-2^1/2)/(x-2)^1/2x1/(2+2)^1/2+1/2
=(x^1/2-2^1/2)/(x-2)^1/2x1/2+1/2
=[1/2x^(-1/2)-0]/[1/2(x-2)^(-1/2)x1]x1/2+1/2
=1/2x^(-1/2)/1/2(x-2)^(-1/2)x1/2+1/2
=x^(-1/2)/(x-2)^(-1/2)x1/2+1/2
=
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哥~我知道你打字不容易~但是你能手写不?我看着费劲啊
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