Factor 2+2z+7z^2 =9z+5

Asked by AnneS2 12 years ago 7/20/2013 5:42 AM

Last updated by anonymous 12 years ago 7/22/2013 11:08 AM

Answered by CherieS 12 years ago 7/22/2013 11:08 AM

2+2z+7z^2 =9z+5

7z^2+2z+2=9z+5

7z^2+2z+2-9z=9z+5-9z

7z^2-7z+2=5

7z^2-7z+2-5=5-5

7z^2-7z-3=0

7z^2-7z-3+3=0+3

7z^2-7z=3

7 (z-1) z = 3