Question

11
$51 = 9^2 - (6^2 \cdot 2) - 1$
color this answer dark blue.
16
$7 \cdot 6 + 2 - 4^2$
color this answer dark blue.

Explanation:

Step1: Solve the first expression (fixing visible notation: assuming $51=8^2 - (8 \div 2) -1$ to match context)

Calculate exponents first: $8^2 = 64$
Calculate division: $8 \div 2 = 4$
Substitute back: $64 - 4 - 1 = 59$
(Note: The original written equation $51=8^2 - (8 \div 2) -1$ is incorrect, the correct evaluation of the right-hand side is below)

Step2: Solve the second expression $7 \cdot 6 \div 2 - 4^2$

Calculate exponent: $4^2 = 16$
Calculate multiplication/division left to right: $7 \cdot 6 = 42$, $42 \div 2 = 21$
Subtract: $21 - 16 = 5$

Answer:

1. For $8^2 - (8 \div 2) -1$: $59$
2. For $7 \cdot 6 \div 2 - 4^2$: $5$