Which expression is equivalent to (x2 − 8) − (−2x2 + 4)?
a) x2 + 12
b) 3x2 + 12
c) −x2 + 12
d) 3x2 − 12

the answer is D. mark me brainliest if im correct.

Step-by-step explanation:

then, the surface area of the sphere shown in the image is: 256π sq. units!

step-by-step explanation:

the lateral surface area of a sphere is 2πrh where h=2r.

then:

surface area = 4πr^2.

in this case, r=8 units ⇒ surface area = 4π(8 units)^2. = 256π sq. units!

then, the surface area of the sphere shown in the image is: 256π sq. units!

stethere all not eveanp-by-step explanation: