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