Question

calculează a×(a+b);stiind ca a÷b=13rest6 b:a=0rest5

Answer 1

a x a +a x b =?
a:b=13 r 6=> a=13b+6
b:a=0 r 5 =>b=a x 0 +5 => b=5
5 x 13 + 6 =65+6=71 
a=71
71x(71+5)=71x76 =5396

Answer 2

a÷b=13 rest6=> a=13b+6
b÷a=0 rest 5=> b=0×a+5=5
a=13b+6
a=13×5+6=65+6=71
a×(a+b)=71×(71+5)=71×76=5396