4 - 3 \times 6 + 2

(4 - 3) \times 6 + 2

4 - 3 \times (6 + 2) ^ 2

\frac{4-3}{6}+2^2

5-4(7-9(5-1)) \times 3^3 -4

12-2(7-4)^2 \div 4

\frac{ \left( 4-3 \right) + { \left( 1+2 \right) }^{ 2 } }{ 6+ \left( 7-5 \right) }