Question

Factorise: 3a (x2 + y2) + 66 (x2 + y2)​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

3(x²+y²)(a+2b)

Step-by-step explanation:

3a(x²+y²)+6b(x²+y²)

(x²+y²)(3a+6b)

3(x²+y²)(a+2b)