Multiplication is performed before addition, so 4 * 2 is computed as 8. Adding 3 to 8 gives 11, which is the correct result.

First, solve the parentheses: 5 + 3 equals 8. Multiplying 8 by 2 gives 16, which is the correct answer.

Since addition and subtraction have the same priority, they are performed from left to right. Calculating 8 - 3 gives 5, then 5 + 2 equals 7.

The operation inside the parentheses is performed first: 3 + 4 equals 7. Then, multiplying 7 by 2 results in 14.

Multiplication comes before subtraction, so first compute 3 * 2, which equals 6. Then, subtracting 6 from 9 gives 3.

Begin by solving the parentheses: 2 + 4 equals 6. Next, divide 12 by 6 to get 2, and finally multiply by 3 to reach 6.

Solve the operations within each set of parentheses first: 8 + 2 is 10 and 5 - 3 is 2. Multiplying the two results gives 20.

According to the order of operations, calculate the exponent: 3^2 equals 9, and then perform the multiplication: 4 * 2 equals 8. Adding 9 and 8 results in 17.

Start by evaluating the parentheses: 6 - 2 yields 4. Then raise 4 to the power of 3 to obtain 64, and finally, dividing 64 by 4 gives 16.

Begin with the multiplication: 4 * 2 equals 8. Then perform the subtraction and addition from left to right: 16 - 8 equals 8, and adding 1 produces 9.

Division and multiplication should be computed before addition. First, 12 ÷ 3 equals 4, then 4 * 2 equals 8; adding 5 gives a total of 13.

First, resolve the expression inside the parentheses: 10 - 3 is 7. Squaring 7 gives 49, and subtracting 6 results in 43.

Compute the multiplication inside the parentheses first: 3 * 2 equals 6. Then, divide 18 by 6 to get 3 and add 4, which produces 7.

The exponent is evaluated first: 3^2 equals 9. Multiplying by 2 gives 18, and subtracting 4 results in 14.

First, perform the division: 8 ÷ 2 equals 4. Then, compute the parentheses: 2 + 2 equals 4, and multiplying these results gives 16.

Substitute the given values: a^2 becomes 2^2, which is 4, and (b + 4) is 3 + 4, equaling 7. Multiplying 4 by 7 gives 28, and subtracting 5 results in 23.

First, solve inside the brackets: 3 + 2 equals 5, and multiplying by 4 gives 20. Squaring 20 results in 400, and dividing by 8 yields 50.

Begin by calculating the exponent: 2^2 is 4, then inside the parentheses, 4 - 5 equals -1. Multiplying -1 by 3 gives -3, and dividing 6 by 3 gives 2. Finally, 9 minus (-3) plus 2 equals 14.

Evaluate the expression inside the first parentheses by performing multiplication before addition: 3 * 2 is 6, then 5 + 6 equals 11. Squaring 11 gives 121. Separately, 12 ÷ 3 equals 4 and adding 4 results in 8, so subtracting gives 121 - 8 = 113.

Evaluate the innermost parentheses: 5 - 2 equals 3, and then multiply by 4 to get 12. Add this to 3 to obtain 15, multiply by 2 to get 30, and finally subtract 7 to arrive at 23.