For what values of x and y is the equation (x2 + y2)2 = (x2 – y2)2 + (2xy)2 true? A) all values of x, and all values of y
B) all values of x, but only positive values of y
C) only positive values of x, but all values of y
D) only positive values of x, and only positive values of y

Factor: 27a3 + 64b3
A) (3a + 4b)(9a2 + 12ab + 16b2)
B) (3a + 4b)(9a2 - 12ab + 16b2)
C) (3a - 4b)(9a2 + 12ab + 16b2)
D) (3a - 4b)(9a2 + 12ab - 16b2)

if you could please explain thank you.

Ahigh-altitude spherical weather balloon expands as it rises, due to the drop in atmospheric pressure. suppose that the radius r increases at the rate of 0.02 inches per second, and that r = 36 inches at time t = 0. determine the equation that models the volume v of the balloon at time t, and find the volume when t = 360 seconds. v(t) = 4π(0.02t)2; 651.44 in3 v(t) = 4π(36 + 0.02t)2; 1,694,397.14 in3 v(t) = four pi times the product of zero point zero two and t to the third power divided by three.; 4,690.37 in3 v(t) = four pi times the quantity of thirty six plus zero point zero two t to the third power divided by three.; 337,706.83 in3