Question

Thực hiện phép tính

Answer 1

b) 34.5² - 4³.3² - 37.2 + 50

= 34.25 - 64.9 - 74 + 50

= 850 - 576 - 74 + 50

= (850 + 50) - (576 + 74)

= 900 - 650

= 250

d) 100 - {20.[3².10 - 3.(35 - 8)]}

= 100 - [20.(9.10 - 3.27)]

= 100 - [20.(90 - 81)]

= 100 - 20.9

= 100 - 180

= -80

Answer 2

\(34.5^2-4^3.3^2-37.2+50\\ =34.25-64.9-37.2\\ =850-576-74\\ =274-74\\ =200\\ 100-\left\{20.\left[3^2.10-3.\left(35-8\right)\right]\right\}\\ =100-\left[20.\left(9.10-3.27\right)\right]\\ =100-\left[20.\left(90-81\right)\right]\\ =100-\left(20.9\right)\\ =100-180\\ =-80\)