Question

factorise 9y²-66yz+121z² by splitting the middle term.​

Answer 1

Answer:

You can't split it in middle term. Rather you'd use formula:

Here's the answer:

Step-by-step explanation:

9y²–66yz+121z²

(3y)²–2.3y.11z+(11z)²

(3y–11z)²

(3y–11z)(3y–11z)

So, the factor is 3y–11z