Question

4*2 la puterea 70:2 la puterea 71

Answer 1

$4\cdot 2^{70} : 2^{71}= 2^2\cdot 2^{70}: 2^{71} = 2^{2+70}:2^{71} = 2^{72}:2^{71} = 2^{72-71} = 2^1 = 2$