如题所述
第1个回答 2015-03-31
48×52
=(50﹣2)×(50+2)
=50×50+50×2﹣50×2﹣2×2
=2500﹣4
=2496本回答被网友采纳
=(50﹣2)×(50+2)
=50×50+50×2﹣50×2﹣2×2
=2500﹣4
=2496本回答被网友采纳
第2个回答 2015-03-31
=(50-2)*(50+2)
=50^2-2^2
=2500-4
=2496
=50^2-2^2
=2500-4
=2496