{ 1 + 2 × [ 4 + 3 × (40 - 5² - √25]} x 2² - 70 =???​

{ 1 + 2 × [ 4 + 3 × (40 - 5² - √25]} × 2² - 70

{1 + 2 × [4 + 3 × (40 - 25 - 5)]} × 4 - 70

{1 + 2 × [4 + 3 × (15 - 5)]} × 4 - 70

{1 + 2 × [4 + 3 × 10]} × 4 - 70

{1 + 2 × [4 + 30]} × 4 - 70

{1 + 2 × 34} × 4 - 70

{1 + 68} × 4 - 70

69 × 4 - 70

276 - 70

206