factorize 4m2+9n2-12mn-1
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Step-by-step explanation:
4m²+9n²-12mn-1
=4m²+9n²-6mn-6mn-1²
=4m² - 6mn +9n² -6mn -1²
=2m(2m-3n)-3n(2m -3n) - 1²
=(2m-3n)(2m-3n)-1²
=(2m-3n)² - (1)²
= (2m-3n+1)(2m-3n-1)
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