Saved Bookmarks
| 1. |
Factorise. 21x^2-2x+1/21 |
|
Answer» hey! Step-by-step explanation: we usually avoid factorising fractions! so, multiply 21 to the equation We will get 441x^2 - 42x+1 a*B = 1 a+b= -42 therfore 441x^2 - 21x-21x + (1) => (21x)^2 - 2 * 21x + +(1)^2 => a^2 - 2ab + b^2 => (a-b)^@ => (21x -1) ² =>(21x -1)(21x - 1) => (x -1/21)(21x - 1) hope it helps |
|