thực hiện phép tính 3^2.22-3^3.19 2^4.5-[131-(13-4)^2] 100:{250: [450-(4.5^3-2^2.25)]}

Đáp án:

Giải thích các bước giải:

a)3^2.22-3^3.19= 9.22-27.19=198- 513= -315

b) 2^4.5-[131-(13-4)^2]=2^4.5-[131-9^2] =2^4.5-[131-81]=16.5-50=80-50=30

c)100:{250: [450-(4.5^3-2^2.25)]}=100:{250: [450-(4.125-4.25)]}=100:{250: [450-(500-100)]}=100:{250: [450-400]}=100:{250: 50}=100:5=20

a). 3^2.22-3^3.19

= 9.22-27.19

=198- 513

= -315

b). 2^4.5-[131-(13-4)^2]

=2^4.5-[131-9^2]

=2^4.5-[131-81]

=16.5-50

=80-50

=30

c). 100:{250: [450-(4.5^3-2^2.25)]}

=100:{250: [450-(4.125-4.25)]}

=100:{250: [450-(500-100)]}

=100:{250: [450-400]}

=100:{250: 50}

=100:5

=20