Simplify: x2+8x+16x+4\dfrac{x^2 + 8x + 16}{x + 4}x+4x2+8x+16 (assume x≠−4x \neq -4x=−4).
x+4x + 4x+4
x−4x - 4x−4
x2+4x^2 + 4x2+4
x+8x + 8x+8