Ok. Here are some of the answers:
1(a) (3x-4y)(3x+4y)
1b(I) 5y^2/9x (ii) (4x+15)/(x+2)(2x-3)
(c) 5 or -1/2
(d)(I) (x-9/2)^2 – 13/4 (ii) 6.30 , 2.70
to be continued ….
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