Question

urgeeeent . dau coroana

Answer 1

a)(x+1)^2 - (y-2)^2 = (x+1+y-2)(x+1-y+2) = (x+y-1)(x-y+3)
b)9a^2 - (x-3)^2 = (3a+x-3)(3a-x+3)
c)(x+2)^2 - 16y^2 = (x+2+4y)(x+2-4y)
d)(x+5)^2 - 9y^2 = (x+5+3y)(x+5-3y)