One, draw up following the smooth number of squares of each number.

1²(　 　 ) 　 　 　 6²(　 　 ) 　

2, extend an exercise:

Will below the letter in calculating type is replaced with the number, make calculate type to hold water.

＝ of A of 　 of 　 of 　 of F of 　 of E of 　 of D of 　 of C of 　 of A 　 B (　 ) 　 B ＝ (　 ) 　 C ＝ () 　 D ＝ (　 )

F of 　 of 　 of 　 of 　 of 　 of ＊ 　 　E ＝ (　 ) 　 F ＝ (　 ) 　 G ＝ (　 )

　 of 　 of 　 of 　 of 　 of 　 of 　 of 　 of 　 of 　 of 　 of 　 of 　 of 　 of 　 of 　 of 　 of 　 of G of 　 of G of 　 of G of 　 of G of 　 of G 　 G

3, solve equation.

62.5 ＝ of X ＋ 45 ＊ of 　 of 　 of 　 of 　 of 　 of 　 of 　 of 　 of 　 of 　 of 114.2 　 　 X ＝ 135

35.5/X ＝ 5

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