Question

{10+[5x(4+2x5)-8]X2}-100​

Answer 1

{10 + [5x × (4 + 2 × 5) - 8] × 2x } - 100 =

= [10 + (5x × 14 - 8 ) × 2x] - 100 =

= [10 + (70x - 8) × 2x] - 100 =

= [10 + 140x - 16x] - 100 =

= 124x + 10 - 100 =

= 124x - 90

Espero que tenha ajudado!