Question

Simplifique as expressões algébricas
preciso passo a passo

Answer 1

a)
$x { }^{2} - 2xy + y {}^{2} - x.(x - 2y) \\ x {}^{2} - 2xy + y {}^{2} - x {}^{2} + 2xy \\ - 2xy + y {}^{2} + 2xy \\ = y {}^{2}$
b)
$x {}^{2} - 4x + 4 + a.(3a + 2) \\ x {}^{2} - 4x + 4 + 3a {}^{2} + 2a \\ = x {}^{2} - 4x + 4 + 3a {}^{2} + 2a$
c)
$m + 1(m - 1)(m + 1) {}^{2} - 2m \\ m + (m - 1)(m + 1)(m + 1) - 2m \\ m + (m {}^{2} - 1)(m + 1) - 2m \\ m + m {}^{3} + m {}^{2} - m - 1 - 2m \\ = m {}^{3} + m {}^{2} - 2m - 1$