Answer:
(a) [tex]9x^2+16x-4[/tex]
(b) [tex]9a(2a+5)[/tex]
(c) [tex](y-6)(y-4)[/tex]
Step-by-step explanation:
(a)
[tex](9x-2)(x+2)=[/tex]
[tex]9x^2-2x+18x-4=[/tex]
[tex]9x^2+16x-4[/tex]
(b)
[tex]18a^2+45a=[/tex]
[tex]9a(2a+5)[/tex]
(c)
[tex]y^2-10y+24=[/tex]
[tex](y-6)(y-4)[/tex]
Hope this helps!