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Сандра0308
@Сандра0308
August 2021
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решите пожалуйста очень надо
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sedinalana
Verified answer
1
(a-1)/2(a-4)+a/(a-4)=(a-1+2a)/2(a-4)=(3a-1)/(2a-8)
2
(2b²-3b+4)/(b-1)²-(b-2)/(b-1)=(2b²-3b+4-b²+2b+b-2)/(b-1)²=(b²+2)/(b-1)²
3
1)2a/b²-1/2a=(4a²-b²)/2ab²
2)1/b+1/2a=(2a+b)/2ab
3)(2a-b)(2a+b)/2ab² * 2ab/(2a+b)=(2a-b)/b
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Answers & Comments
Verified answer
1(a-1)/2(a-4)+a/(a-4)=(a-1+2a)/2(a-4)=(3a-1)/(2a-8)
2
(2b²-3b+4)/(b-1)²-(b-2)/(b-1)=(2b²-3b+4-b²+2b+b-2)/(b-1)²=(b²+2)/(b-1)²
3
1)2a/b²-1/2a=(4a²-b²)/2ab²
2)1/b+1/2a=(2a+b)/2ab
3)(2a-b)(2a+b)/2ab² * 2ab/(2a+b)=(2a-b)/b