PDF chapter test TRY NOW

Factorise the following by taking out the common factor:
 
1. \((ax + ay) + (bx + by) =\)
 
2. \(2x^2(4x - 1) - 4x + 1 =\)
 
3. \(3y(x - 2)^2 - 2(2 - x) =\)
 
Answer variants:
\((4x - 1)(2x^2 - 1)\)
\((x + y)(a + b)\)
\((x - 2)[3y(x - 2) + 2]\)
\((4x + 1)(2x^2 - 1)\)
\((x - 2)[3y(x - 2) - 2]\)
\((x + y)(a - b)\)