Question

How do you factor completely: `-4y^2 + 12y - 16`?

Answer 1

Factor: f(y) = -4y^2 + 12y - 16

Explanation:

f(y) = -4(y^2 - 3y + 4)
The trinomial in the parentheses can't be factored because its determinant D = b^2 - 4ac = 9 - 16 = -7 < 0