Question

Factorise:l²m²n-lm²n²-l²mn². Please do it fast . Tommorow is my exam. Please I request

Answer 1

Factorising algebric expressions is mostly suitable by taking common factors and by applying other suitable formulas according to your syllabus. But, in this case, we will take common, group them within a fixed category, and we will proceed our solution to the end.

For example, using a general theory, consider an example :

Apple+Banana+Grape+ Mango

We can say it as :

Fruits(Apple+Banana+Grape+Mango)

Where fruits represent a total of "1".

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Now, we can have a look on the easy solution to this question. As I said earlier, we will just take common terms or common factors and group them by keeping them fixed.



So, l²m²n - lm²n² - l²mn²

= lmn (lm - mn - ln) [ANSWER]