Решите пжжжжжжжжжжжжж 4

Question

Решите пжжжжжжжжжжжжж 4

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Answer 1

(79² - 65²)/420=((79-65)(79+65)) /420=(14*144)/420=144/30=144/30=48/10=4 4/5=4.8

(92² - 48²) / (27² - 17²)=((92-48)(92+48)) / ((27-17)(27+17))=(44*140)/(10*44)=14

(63² - 27²)/(83² - 79²)=((63-27)(63+27)) / ((83-79)(83+79))=(36*90)/(4*162)=90/18=5