Question

Буду безумно благодарна ​

Answer 1

$(6x-\frac{2}{3})^{2}-(36x-2)x+\frac{2}{3}=36x^{2}-\frac{24}{3}x+\frac{4}{9}-36x^{2}+2x+\frac{2}{3}=2x-8x+\frac{4+6}{9}=1\frac{1}{9}-6x\\\\Otvet:\boxed{1\frac{1}{9}-6x}$