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Answers & Comments


a×b=40

2(a+b)=26

a×b=40

a+b=13

a×b=40

a=13-b

(13-b)×b=40

a=13-b

13b-b²-40=0

a=13-b

b²-13b+40=0

a=13-b

b1=5;b2=8

a1=13-5=8;a2=13-8=5

(8;5);(5;8)

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