Question

rezovati in multimea numerelor naturale ecuatiile :
a) x la puterea 2 ×(y+1)=36
b) x la puterea 3 ×(y-1)=40

Answer 1

avem doua nr inmultite care au rezultat 36.Unul este patrat perfect.
daca x =1,y+1=36=>y=35
daca x=2,y=8
..........x=3,y=3
.........,,x=4,-nu are solutii
....x=5,y-nu are solutii inN
x=6,y=0
b.ai un cub perfect inmultit cu o paranteza
x=1,y=41
x=2,y=6
x=3,y=nu are solutii
x=4_4^3>40