Question

determinati elementele multimilor:
A={x E N/8 la puterea x+8 la puterea x+1 este patrat perfect}
B={x E N/24 la puterea x+24la puterea x +1 este patrat perfect}
URGRNT VA ROG!!!

Answer 1

8^x+8^(x+1)=8^x(8+1)=8^x*9=8^x*3^2

x ∈{0,2,4,6,...n}

24^x+24^(x+1)=24^x(24+1)=24^x*25+24^x*5^2

x∈{0,2,4,6,...n}

Answer 2

$8^{x} + 8^{x+1}$ = $8^{x}(1+8 ^{1})$ = $8^{x} * 9 = 8^{x} * 3^{2}$
24^x+24^x+1 = 24^x (1+24^1) = 24^x*25 = 24^x * 5^2