Step 1: Take out the highest common factor . Arrange the terms in descending order according to the exponents of .
Step 2: Factorise .
can be factorised as .
3 can be factorised as .
For the factorisation of any trinomial, we know that the product of the extremes + the product of the means = the middle term in the trinomial.
Now, we can factorise the expression.
Step 3: Substitute the factors of the expression into the result from Step 1.