Saved Bookmarks
| 1. |
X^3-7x+6 factorize by vanishing method |
|
Answer» X^3-7x+6 = 0 x^3-(6+1)x+6 = 0 x^3 - 6X - x + 6 = 0 x^2(x-6)-1(x-6) = 0 (x-6) (x^2-1) = 0 EITHER, x-6=0 => x = 6 OR, x^2-1=0 => x^2=1 => x = √1 |
|