Question

Determine the factors of 12-3x-4xy-16y by grouping the terms.

Answer 1

Answer:

que is wrong if -4xy = +4xy

then we can solve it

12-3x+4xy-16y

12-16y-3x+4xy

4(3-4y) - x(3 -4y)

(4-x) (3-4y)

Answer 2

$12 - 3x - 4xy - 16y \\ = 3(4 - x) - 4y(x + 4) \\ = (4 - x)(x + 4)(3 - 4y)$