Saturday

December 20, 2014

December 20, 2014

Posted by **ann** on Friday, January 20, 2012 at 1:08pm.

- algebra -
**Steve**, Friday, January 20, 2012 at 2:19pm80x^5 - 360x^3 + 405x

5x(80x^4 - 72x^2 + 81)

in parentheses is just a quadratic in x^2, so

x^2 = (9 ± 16i)/20

Now, just take the square roots of those complex numbers to get your other factors :-)

Sure there's no typo there?

- algebra - Oops -
**Steve**, Friday, January 20, 2012 at 2:21pmOops 80/5 = 16. Makes a big difference

5x(16x^4 - 72x^2 + 81)

5x(4x^2 - 9)^2

5x(2x-3)(2x-3)(2x+3)(2x+3)

- algebra -
**Derek**, Friday, January 20, 2012 at 5:18pm54x3y

- algebra -
**Derek**, Friday, January 20, 2012 at 5:23pmsorry that answer was wrong tis is the right one 3x(43+82/3)*(879/615=y78)

**Answer this Question**

**Related Questions**

math - find the greatest common factor and simplify your answer. 4v to the 7th ...

algebra2 plzz help - how do you solve these problems (5x)to the power of a+4(5x)...

Algebra - Factor each of following expressions x (4th power) - x (3rd power) - ...

8th grade Math - I'm actually in 7th grade, but I'm doing 8th grade pre-algebra...

physics - A constant voltage is applied across a circuit. If the resistance in ...

physics - The disk shaped head of a pin is 1.0 mm in diameter. Which of the ...

college - let i = the square root of -1 with i to the 1st power =i, i to the 2nd...

math - simplify, 4v to the 7th power y to the 9th power and 16v to the 6th power...

algebra - It's a monomial and we are told to simplify and assume no denominator ...

Algebra - Find x if 2^16^x = 16^2^x Just to make this clear, if you were reading...