*Умоляю, помогите мне!*

Question

*Умоляю, помогите мне!*

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Answer 1

Otvet///////////////////////

Answer 2

(5-2x)(7x-1)=(2x-5)²
35x-14x²-5+2x =4x²-20x+25
18x²-57x+30=0
D=3249-2160= 1089          √D=33
x₁=(57+33)/36= 2,5
x₂=(57-33)/36= 24/36= 2/3