2^2-0^2=1*4 4^2-2^2=12=3*4 6^2-4^2=20=5*4第N个等式是?
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2^2-0^2=1*44^2-2^2=12=3*46^2-4^2=20=5*4第N个等式是?2^2-0^2=1*44^2-2^2=12=3*46^2-4^2=20=5*4第N个等式是?2^2-0^2=
2^2-0^2=1*4 4^2-2^2=12=3*4 6^2-4^2=20=5*4第N个等式是?
2^2-0^2=1*4 4^2-2^2=12=3*4 6^2-4^2=20=5*4
第N个等式是?
2^2-0^2=1*4 4^2-2^2=12=3*4 6^2-4^2=20=5*4第N个等式是?
2n^2-(2n-2)^2=4(2n-1)
(2N)^2-(2N-2)^2
=4*N^2-4*N^2+8N-4
=8N-4
=(2N-1)*4
(2n)^2-(2n-2)^2=(2n-1)*4
(2n)^2-(2n-2)^2=(2n-1)*4
(2n)^2-(2n-2)^2=(2n-1)*4