Question

4. Efetue:
a) (x + 3)2 + x2 - 7x
b) (x + 1)2 + (x - 1)2 + (x + 1)-(x - 1)
c) (3a - 1)2 + (a - 2)2
d) (m + 1).(m - 1) - (m - 1)?
e) (p + 5)2 - (p - 5)2​

Answer 1

Resposta:

a)(x+3)2+x²-7x=5x+x²-7x=2x⁴