Factorize fully 12y² – 3x²
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Step-by-step explanation:
FORMULA=a²-b²=(a-b) (a+b)
(12y-3x)(12y+3x)
12y(12y+3x)-3x(12y+3x)
144y²+36xy-36xy-9x²
144y²-9x²
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