alleryStart learning →Extract the numerical common factor and then factorise 3x²−12y² completely.
A3(x−2y)(x+2y)
B3(x−4y)(x+4y)
C3(x−2y)²
D3(x+2y)²
Answer & Solution
Correct answer: A. 3(x−2y)(x+2y)
The expression is 3(x² − 4y²), and the inner difference of squares factors as (x − 2y)(x + 2y).
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