Question

Answer 1

\(f)\) \(3\cdot5^2-27:3^2+5^2\cdot4-18:3^2\)

\(=3\cdot25-27:9+25\cdot4-18:9\)

\(=75-3+100-2\)

\(=175-5\)

`=170`

Answer 2

\(f)3.5^2-27:3^2+5^2.4-18:3^2=15^2-9^2+20^2=225-81+400=544\)

Answer 3

`3.5^2 - 27:3^2 +5^2 . 4 - 18:3^2`

`=7.25-27:9+25.4-18:9`

`=75-3+100-2`

`=170`