Question

2 la puterea a treia x2 la puterea a cincea x2 la puterea a sapteax 2 la puterea a noua,arata ca e patrat perfect

Answer 1

$2^3\cdot 2^5\cdot 2^7\cdot 2^9=2^{3+5+7+9}=2^{24}=2^{12\cdot 2}=(2^{12})^2,\\care\ este\ p\breve{a}trat\ perfect,\ ceea\ ce\ trebuia\ demonstrat.$

Green eyes.