Factor 5x4 - 30x2 - 135.

5(x2+ 9)(x2- 3) ***********
5(x - 3)(x + 3)(x2- 3)
I think it is the one with *******
5(x - 3)(x + 3)(x2+ 3)

Question

Factor 5x4 - 30x2 - 135. 



5(x2+ 9)(x2- 3) ***********
5(x - 3)(x + 3)(x2- 3)
I think it is the one with *******
5(x - 3)(x + 3)(x2+ 3)

anonymous · Answer

no sorry,its the last one $5(x - 3)(x + 3)(x^2+ 3)$

parthkohli · Answer

$$5(x^4 - 6x^2 - 27) = 5(x^4 - 9x^2 + 3x^2 - 27)$$

parthkohli · Answer

I think you can group the terms and factor.

anonymous · Answer

so it is the last one

campbell_st · Answer

this is an equation reducible to a quadratic 

take 5 as the common factor and then you have 

$$5(x^4 - 6x^2 - 27)$$

which can be treated as 

$$5((x^2)^2 - 6(x^2) - 27)$$

anonymous · Answer

yes @Shannon20150

anonymous · Answer

will u help me again all of u