n0

E:3=3/3.6+3/6.9+3/9.12+......+3/30.33

E:3=1/3-1/6+1/6-1/9+1/9-1/12+....+1/30-1/33

E:3=1/3-1/33

E:3=10/33

E=10/33.3

E=20/33

(2\(x\) - 5)\(^{2025}\) = (2\(x - 5\))\(^{2023}\)

(2\(x\) - 5)\(^{2025}\) - (2\(x - 5\)) = 0

(2\(x - 5\))\(^{2023}\) .[(2\(x - 5\))\(^{2}\) - 1] = 0

\(\left[\right. 2 x - 5 = 0 \\ \left(\left(\right. 2 x - 5 \left.\right)\right)^{2} = 1\)

\(\left[\right. 2 x = 5 \\ 2 x - 5 = - 1 \\ 2 x - 5 = 1\)

\(\left[\right. x = \frac{5}{2} \\ 2 x = 6 \\ 2 x = 4\)

\(\left[\right. x = \frac{5}{2} \\ x = 3 \\ x = 2\)

Vậy \(\in \left{\right. \frac{5}{2} ; 2 ; 3 \left.\right}\)

no

225

15.15=225

374+376+378+380+382+384+386+388+390+392+394+396+398+400+402+404+406+408+410 =7448

không có ai ở đây đâu!!!!!!!!!!!!!!!!!!!!!!!

KHÔNG

1+1=2

2+2=4

3+3=6

4+4=8

5+5=10