Answer:
A.) 2x^3y - 10x^2y + 18xy - 90y
B.) (2x^2y + 18y)( x - 5 )
Explanation:
2x3y + 18xy − 10x2y − 90y
The expression above is the same as
2x^3y + 18xy - 10x^2y - 90y
Re write the expression
2x^3y - 10x^2y + 18xy - 90y
2x^2y( x - 5 ) + 18y( x - 5 )
Therefore, the expression is factored completely as;
(2x^2y + 18y)( x - 5 )