Question

Daca a•a=9 b=3•a c=6•b calculează. a+b+c=,. b -a+c=​

Answer 1

a² = 9 ⇒ a = 3

b = 3a ⇒ b = 3 · 3 = 9

c = 6b ⇒ c = 6 · 9 = 54

a + b + c = 3 + 9 + 54 = 66

b - a + c = 9 - 3 + 54 = 60

Answer 2

Răspuns:

a²=9

==>a=3

b=3a=3•3=9

==> b=9

c=6•b

==> c=6•9=54

==> c=54

a+b+c=66

3+9+54=12+54=66

b-a+c=60

9-3+54=6+54=60