Mathematical expression with multiple variables and exponents %e1%81%81%e1%81%81%e1%81%81%e1%81%81%e1%81%81%e1%81%81%e1%81%81%e1%81%81%e2%81%bf%cb%a3%cb%a3%cb%a3%cb%a3%cb%a3%ca%b8%cb%a2%e1%b5%89%cb%a3%cb%a3%cb%a3