a, (-5).(-20)+72-100-|8-30| b,(-3)^2.(-12.3-3)-4^2 06/11/2021 Bởi Lydia a, (-5).(-20)+72-100-|8-30| b,(-3)^2.(-12.3-3)-4^2
a) (-5).(-20) + 72 – 100 – |8 – 30| = 100 + 72 – 100 – |-22| = 100 + 72 – 100 – 22 = (100 – 100) + (72 – 22) = 0 + 50 = 50 b) (-3)².(-12.3 – 3) – 4² = 9.(-36 – 3) – 16 = 9.(-39) – 16 = -351 – 16 = -367 Bình luận
a) (-5).(-20) + 72 – 100 – |8 – 30|
= 100 + 72 – 100 – |-22|
= 100 + 72 – 100 – 22
= (100 – 100) + (72 – 22)
= 0 + 50
= 50
b) (-3)².(-12.3 – 3) – 4²
= 9.(-36 – 3) – 16
= 9.(-39) – 16
= -351 – 16
= -367