Question

b) 2021 + 5[300 – (17 – 7)²]

Answer 1

\(2021+5\left[300-\left(17-7\right)^2\right]\)
\(=2021+5\left[300-10^2\right]\)
\(=2021+5\left[300-100\right]\)
\(=2021+5\cdot200\)
\(=2021+1000=3021\)

Answer 2

b) 2021 + 5 [300 - (17 - 7)²]

= 2021 + 5 [ 300 - 10²]

= 2021 + 5 [ 300 - 100]

= 2021 + 5 . 200

= 2021 + 1000

= 3021