Question

Simplifique as expressões algébricas:
a) x.(2x - 1) + x.(1 - 3)
b) (a + 5).(a + 5) - (a + 5)²

Answer 1

a) 2x²-x + x - 3x
b) a²+5a+5a+25-2a+25

Caso precise resolver, só igualar a 0.