按规律填数字:①1,3,4,1,9,(?)②0,9,26,65,124,(?)③0,4,16,40,80...答:①1,3,4,1,9,(64)从第3个数字起,4=(3-1)^2 1=(4-3)^2 9=(1-4)^2 所以X=(9-1)^2=64 0,9,26,65,124,(217)0(1x1x1-1) 9(2x2x2+1) 26(3x3x3-1) 65(4x4x4+1) 124(5x5x5-1) 217(6x6x6+1)0,4,16,40,80,140 4-0=4=4*1 16-4=12=4*3=4*(1+2...