Question

7)CALCULE:


a)9^-2   - ( -2/3)^3 =



b)( -9 + 3)^2 + 15 =



c)(3^2)^-1  +   (4^2 : 4^2)=

​

Answer 1

Resposta:

Explicação passo-a-passo:

9^-2-(-2/3)^3=

(1/9)^2-(-8/27)=

1/81+8/27=

1/81+24/81=

+25/81

(-9+3)^2+15=

(-6)^2+15=

+36+15=

+51

(3^2)^-1+(4^2:4^2)=

(9)^-1+(16:16)=

1/9+1=

1/9+9/9=

+10/9