Practicing Success
Simplify $x^4 - 15x^3 +15x^2 -15x + 40$; given x = 14. |
0 40 14 26 |
26 |
$x^4 - 15x^3 +15x^2 -15x + 40$ given x = 14 = (14)4 - 15 × (14)3 + 15×(14)2 - 15×14 + 40 = (14)4 - (14 + 1) × (14)3 + (14 + 1)(14)2 - (14 + 1) 14 + 40 = (14)4 - (14)4 - (14)3 + 143 + (14)2 - 142 - 14 + 40 = 26 |