## anonymous 3 years ago Help! I need to show work for this question. 12b^-2-7b^-1+1=0

1. anonymous

I got b = 4,3

2. anonymous

$\frac{ 12 }{ b^{2} }-\frac{ 7 }{ b }+1=0$ Multiply both sides by b^2 $b^{2}-7b+12=0$ So your answer looks right.