Question

How do you find all the zeros of f(x)=–3x5–8x4+25x3–8x2+x–19?

Answer 1

Here we have to find zero of f(x) so we put f(x)=0

So,

—3x5—8x4+25x3—8x2+x—19=0

—15—32+75—16+x—19=0

75—82+x=0

—7+x=0

x=7

Hence,7 is zero of f(x)