Question

21x²-2x+1/12 factorise it​

Answer 1

Answer:

>>  21x² - 2x + 1/21

>> { (21x)² - 42x + 1 } ÷ 21

>> { 441x² - 42x + 1 } ÷ 21

>> { 441x² - (21 + 21)x + 1} ÷ 21

>> { 441x² - 21x - 21x + 1} ÷ 21

>> { 21x( 21x - 1) - 1(21x - 1)} ÷ 21

>> (21x - 1)(21x - 1) ÷ 21

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