SOLUTION: what are all the real zeros of f(x)=x^4-5x^2+4 ? and can you please show me how to work this problem out step by step ?

SOLUTION: what are all the real zeros of f(x)=x^4-5x^2+4 ? and can you please show me how to work this problem out step by step ?

Algebra.Com

Question 248334: what are all the real zeros of f(x)=x^4-5x^2+4 ? and can you please show me how to work this problem out step by step ?
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
x^4-5x^2+4=0 This is a quadratic
(x^2-4)(x^2-1)=0
(x+2)(x-2)(x+1)(x-1)=0
x=2, x=-2, x=1, x=-1 The zeros.
.
Ed
RELATED QUESTIONS
Can you please help me solve this problem step by step? Find all zeros of f(x).... (answered by venugopalramana)

hi i would like to know what are all the real zeros of f(x)=x^4-2x^3-23x^2+24x+144? and... (answered by Alan3354)

Please show me how to work this problem step by step 3 0ver 4 - x... (answered by funmath)

can you show me how to work this problem out step by step. 2/5x + 6 =... (answered by ewatrrr,stanbon)

Can you please show me step by step how to get this answer for the problem -1/2-5/6 x =... (answered by josgarithmetic,Edwin McCravy)

Can you please show me how to work this problem step by step? -7+x+4+4x-x-3+6... (answered by checkley71)

I have tried to work this out and I keep getting the wrong answer please show me step by... (answered by nitin.thacker)

Can you please show me step by step how to solve this problem. The directions are: Find... (answered by SHUgrad05)

Could you please show me step by step how to do this problem? (x^2-6x+8)/(x-4) (answered by edjones)