Monday

December 22, 2014

December 22, 2014

Posted by **sue** on Friday, December 9, 2011 at 4:53pm.

f(x) = x^3 - 125

????????

- algebra -
**Reiny**, Friday, December 9, 2011 at 6:55pmwe have a difference of cubes

x^3 - 125 = (x-5)(x^2 + 5x + 25)

the quadratic has complex roots of

x = (-5 ± √-75)/2

= (-5 ± 5√-3)/2

= (-5 ± 5√3 i )/2

- algebra -
**sue**, Sunday, December 11, 2011 at 1:39pmwhat does the question mark mean????

**Answer this Question**

**Related Questions**

Math - Find all complex zeros for the following polynomial function. Please show...

algebra - List all possible rational zeros for the polynomial below. Find all ...

college algebra - use the rational zeros theorem to find all the real zeros of ...

college algebra - 1. solve the following logarithmic equation log_8(x+8)+log_8(x...

Math Problem2 - List all possible rational zeros for the polynomial below. Find ...

calculus - can someone please help me find all the zeros of the following ...

find real and complex 0 - Find the real and complex zeros of the following ...

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

Algebra - Consider the polynomial: f(x) = 2x^3 – 3x^2 – 8x – 3. (a) By using the...

Algebra - Consider the polynomial f(x) = 3x3 – 2x2 – 7x – 2. (a) By using the ...