Question

factorise 21x²- 2x + 1/21

Answer 1

  21x² - 2x + 1/21
Here the product = 21×1/21=1
                                  sum = -2
Splitting the middle term
⇒ 21x² - x - x +1 / 21

⇒ 21x (x - 1 / 21) - 1(x - 1 / 21)

⇒ (x -1/21)(21x - 1).
hope you make this me brainliest answer:)

Answer 2

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