Question

A)6.a2+7.a2
Para:a=2

B)a2+b2+c2
Para:a=2;b=2 e c= 2

Answer 1

A) a = 2

6a² + 7a² =

6 . ( 2 )² + 7 . ( 2 )² =

6 . ( 2×2 ) + 7 . (2×2) =

6 . ( 4 ) + 7 . ( 4 ) =

24 + 28 = 52

B) a = 2

b = 2

c = 2

a² + b² + c² =

(2)² + (2)² + (2)² =

(2×2) + (2×2) + (2×2) =

(4) + (4) + (4) =

4 + 4 + 4 =

8 + 4 = 12