Question

4^2 + 5 • 3^2 – 4^2 ÷ 2^3

Answer 1

Remember BEDMAS 
Brackets, Exponents, Division or Multiplication ( left to right), Addition or subtraction ( left to right) 
And the dot between 5 and 3^2 means multiply. 
4^2 + 5 · 3^2 - 4^2 ÷ 2^ 3

4×4 + 5 · 3×3 - 4×4 ÷ 2×2×2
16 + 5 · 9 - 16 ÷ 4×2
16 + 45 - 16 ÷ 8
16 + 45 - 2
61 - 2 
59

Answer 2

Following the order of operations:
4^2 + 5 * 3^2 – 4^2 / 2^3
16 + 5 * 3^2 – 4^2 / 2^3
16 + 5 * 9 – 4^2 / 2^3
16 + 5 * 9 – 16 / 2^3
16 + 5 * 9 – 16 / 8
16 + 45 – 16 / 8
16 + 45 – 2
61 – 2
59

The answer is 59