MÌnh cần giải gấp !!!! (dấu / chỉ phần nha) a) ( $\frac{3}{5}$ )^2 *5+ $\frac{5}{2}$ : $\frac{10}{2}$ b)(2/7 )^202 : (4/14)^101 c) 11^100 : 22^50

Đáp án:

a) (3/5)².5+5/2:10/2

    =9/25.5+1/2

    =9/5+1/2

    =23/10

b) (2/7 )^202 : (4/14)^101

    =[(2/7)²]^101:(4/14)^101

    =(4/49)^101:(4/14)^101

    =(2/7)^101.(4/14)^101:(4/14)^101

    =(2/7)^101

c) 11^100 : 22^50

    =(11²)^50 : 22^50

    =(11/2)^50.22^50:22^50

    =(11/2)^50

 -Chúc bạn hk tốt-