Question

F(x)=4x^5-8x^4-5x^3+10x^2+x-2

Use the rational zero test to find all possible rational zeros of f, separate with commas if needed. I already tried (2x+1)(2x-1)(x+1)(x-1)(x-2) and WebAssign says it’s incorrect.

Answer 1

-1; -1/2; 1/2; 1; 2 or factors of -2 are -1, 2, 1, -2

factors of 4 are 1, 4, 2, -1, -4, -2

possible zeros are -1, 1, 1/2, -1/2

try 1

Explanation: