Question

- Using the factor theorem factorise the polynomial
f(x) = x power 4 - 14x power 3 + 31x power 2 - 154x + 120​

Answer 1

Answer:

320

Step-by-step explanation:

f(x) = x⁴ - 14x³ + 31x² - 154x + 120

0 of x+1= -1

Solution:

f(x) = x⁴ - 14x³ + 31x² - 154x + 120

f(-1) = (-1)⁴ - 14(-1)³ + 31(-1)² - 154(-1) + 120

= 1 + 14 + 31 + 154 + 120

= 320