Question

daca 3^8-3^6=x^3,atunci a x<15 b x=16 c x=17 d >18

Answer 1

2*8 - 3*6 = x*3 24 - 18 = x*3 6 = x*3 x = 6 : 3 x = 2 => x < 15 sper că te-am ajutat:))

Answer 2

3⁸-3⁶=
3⁶(3²-1)=
3⁶·8
3⁶·8=x³ ⇔(3²·2)³=x³ ⇔x=3²·2⇒x=18;(varianta d);