How do I factor out this polynomial by grouping and by GCF? #d-d^2+d-1#

1 Answer
Jim G.
May 24, 2018

#(1-d)(d-1)#

Explanation:

#"factor first/second terms and third/fourth terms"#

#=color(red)(d)(1-d)color(red)(-1)(1-d)#

#"take out the "color(blue)"common factor "(1-d)#

#=(1-d)(color(red)(d-1))#

#d-d^2+d-1=(1-d)(d-1)#

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