Question

Descompuneti in factori:
a) 4a^2 -4a +1 =
b) x^2 + 4xy + 4y^2 =
c) 16a^2 - 25b^2 =
d) ax^4 -a =

Answer 1

a) 4a^2 -4a +1 = (2a - 1)(2a - 1)

b) x^2 + 4xy + 4y^2 = (x + 2y)(x + 2y)

c) 16a^2 - 25b^2 = (4a - 5b)(4a + 5b)

d) ax^4 -a = a(x^4 - 1) = a(x² - 1)(x² + 1) = a(x - 1)(x + 1)(x² + 1)