Question

Factorise 
10p^2 -21p -10

Answer 1

To factorise:  $10p^2-21p-10$

=   $10p^2+4p-25p-10$

=   $2p(5p+2)-5(5p+2)$

=   $(5p+2)(2p-5)$

Hope this helps you! :-)