using the relationship between the zeroes of he quadratic polynomial.
Sum of zeroes 
Product of zeroes 
![\Rightarrow(1-\mathrm{b})(1)(1+\mathrm{b})=-1 \quad[\because \mathrm{a}=1]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-aa63c133388bba91dba0165818a62fb0_l3.png "Rendered by QuickLaTeX.com")
If the zeroes of the polynomial 
using the relationship between the zeroes of he quadratic polynomial.
Sum of zeroes
Product of zeroes
