Question

factor 16r2-8r+1

Answer 1

explain in detail

Answer 2

find factors of 16 that add up to -8
try -4 and -4
(-4)*(-4) = 16
-4 + -4 = -8

then replace -8r with -4r+ -4r, factor by grouping
(16r^2 -4r) + (-4r+1)
4r(4r-1) - (4r-1)
(4r-1)(4r-1)
(4r-1)^2

turns out this is a perfect square

Answer 3

but we should do1 lcm

Answer 4

for+1

Answer 5

not sure what you mean