Answer:
3n²(4n - 1)(4n + 1)
Explanation:
given
48
- 3n² ← factor out 3n² ( the greatest common factor )
= 3n²(16n² - 1) ← 16n² - 1 is a difference of squares and factors in general as
a² - b² = (a - b)(a + b) , then
16n² - 1
= (4n)² - 1² [ with a = 4n and b = 1 ]
= (4n - 1)(4n + 1)
Then
48
- 3n²
= 3n²(4n - 1)(4n + 1) ← in factored form