Question

11
81 = 9² - (6² · 2) - 1
color this answer dark blue
16
7 · 6 ÷ 2 - 4²

Explanation:

Step1: Evaluate exponents first

$4^2=16$

Step2: Perform multiplication/division left to right

$7 \cdot 6 = 42$, $\frac{42}{2}=21$

Step3: Subtract the squared value

$21 - 16$

Step1: Calculate all exponents

$9^2=81$, $6^2=36$

Step2: Multiply inside parentheses

$36 \cdot 2=72$

Step3: Subtract terms right to left

$81 - 72 -1 = 8$

Answer:

5

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For the first (partially visible) problem $81=9^2-(6^2 \cdot 2)-1$ (to verify equality):