已知(a-1)²+|b+4|=0,求1/ab+1/(a+3)(b+3)+1/(a+6)(b+6)+1/(a+9)(b+9)的值已知(a-1)²+Ib+4I=0,求1/ab+1/(a+3)(b+3)+1/(a+6)(b+6)+1/(a+9)(b+9)的值
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![已知(a-1)²+|b+4|=0,求1/ab+1/(a+3)(b+3)+1/(a+6)(b+6)+1/(a+9)(b+9)的值已知(a-1)²+Ib+4I=0,求1/ab+1/(a+3)(b+3)+1/(a+6)(b+6)+1/(a+9)(b+9)的值](/uploads/image/z/11473986-66-6.jpg?t=%E5%B7%B2%E7%9F%A5%EF%BC%88a-1%EF%BC%89%26%23178%3B%2B%7Cb%2B4%7C%3D0%2C%E6%B1%821%2Fab%2B1%2F%28a%2B3%29%28b%2B3%29%2B1%2F%28a%2B6%29%28b%2B6%29%2B1%2F%28a%2B9%29%28b%2B9%29%E7%9A%84%E5%80%BC%E5%B7%B2%E7%9F%A5%EF%BC%88a-1%EF%BC%89%26%23178%3B%2BIb%2B4I%3D0%2C%E6%B1%821%2Fab%2B1%2F%28a%2B3%29%28b%2B3%29%2B1%2F%28a%2B6%29%28b%2B6%29%2B1%2F%28a%2B9%29%28b%2B9%29%E7%9A%84%E5%80%BC)
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已知(a-1)²+|b+4|=0,求1/ab+1/(a+3)(b+3)+1/(a+6)(b+6)+1/(a+9)(b+9)的值已知(a-1)²+Ib+4I=0,求1/ab+1/(a+3)(b+3)+1/(a+6)(b+6)+1/(a+9)(b+9)的值
已知(a-1)²+|b+4|=0,求1/ab+1/(a+3)(b+3)+1/(a+6)(b+6)+1/(a+9)(b+9)的值
已知(a-1)²+Ib+4I=0,求1/ab+1/(a+3)(b+3)+1/(a+6)(b+6)+1/(a+9)(b+9)的值
已知(a-1)²+|b+4|=0,求1/ab+1/(a+3)(b+3)+1/(a+6)(b+6)+1/(a+9)(b+9)的值已知(a-1)²+Ib+4I=0,求1/ab+1/(a+3)(b+3)+1/(a+6)(b+6)+1/(a+9)(b+9)的值
根据题意哟:
a-1=0;
a=1;
b+4=0;
b=-4;
原式=1/(1×(-4))+1/(1+3)(-4+3)+1/(1+6)(-4+6)+1/(1+9)(-4+9)
=-1/4-1/4+1/14+1/50
=-1/2+50/700+14/700
=-350/700+64/700
=-286/700
=-143/350;
很高兴为您解答,skyhunter002为您答疑解惑
如果本题有什么不明白可以追问,
(a-1)²+Ib+4I=0所以a-1=0,b+4=0,即a=1,b=-4
所以1/ab+1/(a+3)(b+3)+1/(a+6)(b+6)+1/(a+9)(b+9)
=-1/4-1/4+1/14+1/50
=-143/350