Mathematical expression with multiple variables and exponents Related tags:%e1%81%b8%e1%81%b8%e2%81%bf%cb%a3%cb%a3%cb%a3%cb%a3%cb%a3ca%cb%a2%e1%b5%89%cb%a3%cb%a3%e2%81%bf%cb%a3%e2%81%bf