Question

AJUTORRRRRRRRRRRRRRRRRRRRRRRRRRRRRR!!! ​

Answer 1

Răspuns:

ab∈{10; 11;20;22;33; 39;42;60}

8 numere

Explicație pas cu pas:

• a²+b=1... a=1, b=0     ab=10

• a²+b=2 ....a=1, b=1    ab=11

a²+b=3.....imposibil, ca suma intre o cifra si patratul unei cifre

• a²+b=4....a=2, b=0

• a²+b=6.... a=2, b=2...ab=22

• a²+b=12.. a=3, b=3...ab=33

• a²+b=18...a=3...b=9.....a=4, b=2  ab∈{39;42}

• a²+b=36...a=6, b=0....ab=60

ab∈{10; 11;20 ;22;33; 39;42;60}

8 solutii