Question

3. Calcule a²+ b² sabendo que:
a) a=1/2 e b =1/2
b) a=3/4 e b = 1/2​

Answer 1

Resposta:

${a}^{2} + {b}^{2} = (a + b) \times (a - b)$

a) (1/2+1/2)x(1/2-1/2). =0

b) (3/4+1/2)x(3/4-1/2)

(10/8)x(2/8)= 20/64= 5/6