Question

Calculeaza patratele numerelor a, b, c​

Answer 1

Răspuns:

a = 84 : 6 - 3^2

a = 84 : 6 - 9

a = 14 - 9

a = 5

a^2 = 5^2 = 25

b = 105 : 7 = 15

b^2 = 15^2 = 225

c= (9^2 - 7^2) : 4^2 = (81 - 49) : 16 = 32 : 16 = 2

c^2 = 2^2 = 4

Answer 2

a = 84 : 6 - 3² = 14 - 9 = 5

a² = 5² = 5×5 = 25

b = 105 : 7 = 15

b² = 15² = 15×15 = 225

c = (9² - 7²) : 4² = (81 - 49) : 16 = 32 : 16 = 2

c² = 2² = 2×2 = 4

d = 14² - 16×12 = 196 - 192 = 4

d² = 4² = 4×4 = 16