Question

Factorise

1)8a+b³+12a²b+6ab²

2)27y³+12a²b+6ab²

3)49a²+4b²+9c²-28ab+12bc-42ac

4)8a³-y³-12x²y+6xy²

5)x²-x-6

6)4y²-4y+1

Answer 1

I think the (2) is wrong it's not 27y^3...it's 8a^3+b^3