Question

factorise 3m² - 48n²

please do step by step explanation and do in page if you give the right answer so I Mark you as brainlist ​

Answer 1

Answer:

3m² - 24mn + 48n²

First, I'll factor out the 3, since it's common in all parts of that trinomial:

3(m² - 8mn + 16n²)

Now, I need two numbers that multiply to 16, that adds to -8. -4 and -4:

3(m - 4n)(m - 4n)

or

3(m - 4n)²