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S2 Mathematics

Question post on Mon, 09/03/2020 6:37pm

Need help with these questions. Thx!

SavingPrivateTutor · Answer 1 · Post on Tue, 10/03/2020 11:48am

SavingPrivateTutor Post on Tue, 10/03/2020 11:48am

(a) (a-9)^2 (use identities: a^2-2ab+b^2)

(b) (5b-2)^2

(c) (3c-d)^2

(d) (7e-2f)^2