решите уравнения:

1)(4у-5)(3у-1)-(2у-7)(6у+7)+54=0

2)(3у-6)(4у-2)-(2у-9)(6у+5)-1=0

          2

3)(2х-3)-92х-1)(2х+3)=4

          2                             2

4)(7-3у) - (5у+1)(2у-5)+у = 0

цифры над уравнениями это степени!!!

 

 

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