Question

c) 1 - x²y²
d) 81m2 - 25a2​

Answer 1

Oie, Td Bom?!

c)

$= 1 - x {}^{2} y {}^{2}$

$= 1 {}^{2} - (xy) {}^{2}$

$=(1 - xy) \: . \: (1 + xy)$

d)

$= 81m {}^{2} - 25a {}^{2}$

$= 9 {}^{2} m {}^{2} - 5 {}^{2} a {}^{2}$

$= (9m) {}^{2} - (5a) {}^{2}$

$= (9m - 5a) \: . \: (9m + 5a)$

Att. Makaveli1996