Saved Bookmarks
| 1. |
Find all the zeroes of the polynomial p (x)=x4-7x3+9x2+13x-4,if two of its zeroes are 2+underroot 3 and 2-underroot 3 |
|
Answer» x^4-7x^3+9x^2+13x-4 from (2)=(2)^4-7(2)^3+8(2)^2+13(2)-4=16-7(8)+8(4)+13(2)-4=16-56+48+26-4=16+48+26-56-4=42+48-60=90-60=30; (3)^4-7(3)^3+8(3)^2+13(3)-4=81-189+72+39-4=-1 |
|