Question

please fo this fast where i am sleepy and i have lost many point

Answer 1

p²+6p+8

=p²+2p+4p+8
=p(p+2)+4(p+2)
=(p+2)(p+4)

So p=(-2) or p=(-4)

q²-10q+21

=q²-7q-3q+21
=q(q-7)-3(q-7)
=(q-7)(q-3)

So q=7 or q=3.

Hope it Helps...
Regards,
Leukonov.

Answer 2

see solutions in pics