100x^2 - 40x + 4 = 1 subtract 1 from both sides
100x^2 - 40x + 3 = 0 factor
(10x -3)(10x -1) = 0
So, setting each factor to 0, we have
10x - 3 = 0 → 10x = 3 → x = 3/10
10x - 1 = 0 → 10x = 1 → x = 1/10
"a" is correct
– 40 
+ 4 
1
, 
}
, 
}
}
, 1}
