Friday

February 27, 2015

February 27, 2015

Posted by **Zac** on Saturday, May 5, 2012 at 8:53pm.

f(x)=4x^5+4x^2-9

Find all rational roots of each function

f(x)=2x^3+x^2+8x+4

- algebra 2 -
**bobpursley**, Saturday, May 5, 2012 at 9:01pmsecond:

x^2(2x+1)+4(2x+1)

(2x+1)(x^2+4)

(2x+1)(x+j)(x-j)

so if the expression were equal zero, then

zeroes are -1/2, -j,+j where j= sqrt(-1)

so the only rational root is -1/2

**Answer this Question**

**Related Questions**

Algebra - Can someone please explain how to do these problems. 1)write a ...

Math Problem (please help) - Find all the zeros of the function. When there is ...

algebra - list all the possible rational zeros of f using the rational zero ...

algebra - Use the rational zero theorem to list all possible rational zeros for ...

Math - Use the Rational Zeros Theorem to write a list of all possible rational ...

math - List all possible rational zeros of... h(x)= 2x to the (4th power) - 5x (...

algebra - List all possible rational zeros given by the Rational Zeros Theorem (...

ALGEBRA 2 - Use the Rational Root Theorem to list all possible rational roots ...

Algebra - Please check my answers. Thanks! Solve the polynomial equation. In ...

Algebra- is my answer right - Use the rational zeros theorem to list all ...