Factor completely 3x4 - 48. 3 (x2 - 4) (x2 + 4) 3 (x - 2) (x + 2) (x + 2) (x + 2) 3 (x - 2) (x + 2) (x2 + 4) 3 (x - 2) (x + 2) (x2 - 4)

3 (x-2) (x+2) (x^2+4)

Step-by-step explanation:

3x^4 - 48

Factor out a 3

3 (x^4 - 16)

Inside the parentheses is the difference of squares (a^2 - b^2) = (a-b) (a+b)

where a = x^2 and b = 4

3 (x^2-4) (x^2+4)

Inside the first parentheses is the difference of squares where a = x and b=2

3 (x-2) (x+2) (x^2+4)

3 (x-2) (x+2) (x^2+4)