Question 1 Report
Factorize completely y3 -4xy + xy3 - 4y
Answer Details
y3 -4xy + xy3 - 4y = y3(1 + x) - 4y(1 + x) (y3 - 4y)(1 + y) = (y3(1 + x) - 4y(1 + x)) ∴ = y(1 + x)(y + 2)(y - 2)