Question

4s2 -4s+1

Split the middle term and factorise the given expression

Answer 1

a.c = Product of 4 and 1 = 4
Factors of 4= 4, 1
= 2,2
Only the factors 2 and 2 gives 4-->(2+ 2)
As b=-4
For -4 , both the factors have negative sign.
– 2–2= - 4
=>4s2-2s-2s+1
=>2s(2s-1)-(2s-1)
=>(2s-1)(2s-1)
=>(2s-1)^2