Question

Calculați pătratele numerelor de mai jos 2³x5 ; 5,(6) ; | 3 pe 2 | ; |-8 pe 4| ; 6 pe 7 ; 2,(5) ; 3²x2 ; -2³ ; -0,1​

Answer 1

(2^3 × 5)^2 = 2^6 × 5^2 = 64×25 = 1600

5,(6)^2 = [(56-5)/9]^2 = (51/9)^2 = (17/3)^2 = 17^2/3^2 = 289/9

(|3/2|)^2 = (3/2)^2 = 3^2/2^2 = 9/4

(|-8/4|)^2 = (|-2|)^2 = 2^2 = 4

(6/7)^2 = 6^2/7^2 = 36/49

[2,(5)]^2 = [(25-2)/9]^2 = (23/9)^2 = 23^2/9^2 = 529/81

(3^2 × 2)^2 = (3^2)^2 × 2^2 = 3^4 × 2^2 = 81 x 4 = 324

(-2^3)^2 = (-8)^2 = 64

(-0,1)^2 = (-1/10)^2 = 1/100 = 0,01