Question

Fatore as expressões:
a) a²-25
b) x²-1
c) a²-4
d) 9-x²
e) x²-a²
AJUDAAAAAAAAAAAAAAAAAA
POR FAVORRRRRRRRRR
QUERO SÓ CONFERIR A RESPOSTA FINAL.

Answer 1

Oie, Td Bom?!

a)

$a {}^{2} - 25 = a {}^{2} - 5 {}^{2} = (a - 5) \: . \: (a + 5)$

b)

$x {}^{2} - 1 = x {}^{2} - 1 {}^{2} = (x - 1) \: . \: (x + 1)$

c)

$a {}^{2} - 4 = a {}^{2} - 2{}^{2} = (a - 2) \: . \: (a + 2)$

d)

$9 - x {}^{2} = 3 {}^{2} - x {}^{2} = (3 - x) \: . \: (3 + x)$

e)

$x {}^{2} - a {}^{2} = (x - a) \: . \: (x + a)$

Att. Makaveli1996