Answer:
a) 2p(1-2q)
b) don't know what you mean by r?
c) (k+3)(k+10) using the S, P, N method
d) k²+13k+30=0
(I think you meant to write k squared as it makes more sense)
k=2
b) dunno
c) k(2+13+30)
d) I’m not sure
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