how can i factor this?

[TanyaGrape]

the directions say factor

1-10r+25r^2

i got

1r(1)(10r25r^2)

i know i have the problem wrong

so i just need to know how to factor it

any help will be appreciated

 

[sgrabbit]

yes its wrong because u cant factor out r from everything.

 

[zerodegrees]

hint: write the trinomial in decending order. Does this look like a trinomial square now?

 

[Guest]

not the answer

this is how it is suppose to be
1-10r+25r^2
1+5*r*2+5^2*r=(5r-1)(5r-)