Question

Fatore as expressões.


A) a2 – 64


B) 9x2 – 25y2

Obs: se puder colocar o cálculo ajudaria muito

Answer 1

a)

$~~~~~~~~~~~~~~\large\boxed{{\sf \huge\sf{ {a}^{2} - 64}}} \\ ~~~~~~~~~~~~~~ \sf{a}^{2} - {8}^{2} \\~~~~~~~~~~~~~~ \sf(a - 8) \times (a + 8)$

b)

$~~~~~~~~~~~~~~\large\boxed{{\sf \huge\sf{ {9x}^{2} - {25y}^{2} }}} \\ ~~~~~~~~~~~~~~ \sf{3}^{2} {x}^{2} - {5}^{2} {y}^{2} \\~~~~~~~~~~~~~~ \sf {(3x)}^{2} - {(5y)}^{2} \\ ~~~~~~~~~~~~~~ \sf (3x - 5y) \times ( 3x+ 5y)$