(50+1/3)×(49+2/3)等于多少?

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(50+1/3)×(49+2/3)等于多少?
(50+1/3)×(49+2/3)等于多少?

(50+1/3)×(49+2/3)等于多少?
(50+1/3)×(49+2/3)
=(50+1/3)×(50-1/3)
=50²-(1/3)²
=2500-1/9
=2499又8/9

=(50+1/3)(50-1/3)
=50²-(1/3)²
=2500-1/9
=2499又8/9

等于150/3×149/3=7450