Question

Find the zeros of f(x)= x⁴-2x³+10x²-18x+9, given a zero at x=1

Answer 1

Answer: f(1)=0

Explanation:

replace x by 1

`f(1)=1^(4)-2(1)^(3)+10(1)^(2)-18(1)+9`

f(1)= 1-2(1)+10(1)-18+9

f(1)= 1-2+10-18+9

f(1)= 1+10+9-2-18

f(1)= 20-20

f(1)= 0