Question

[Đặng Thu Hiền]

tinh gia tri bieu thuc B=a/2-2/b voi |a|=1,5; b=-0,75

Answer 1

[弃佛入魔]

Xét 2 trường hợp

TH1: a = -1,5

Ta có \(B=\dfrac{-1,5}{2}-\dfrac{2}{-0,75}\)\(=\dfrac{23}{12}\)

TH2: a = 1,5

Ta có \(B=\dfrac{1,5}{2}-\dfrac{2}{-0,75}=\dfrac{41}{12}\)

Answer 2

[Trúc Giang]