The hsccoaching.com was shut down. But there is a new website now called http://extension2.com ( a mirror of which is also at http://advancedmathematics.com.au )
There you can get the 2018 HSC solutions for Extension 1 at http://extension2.com/Resources/2018 Ext1.pdf
(or alternative link: http://advancedmathematics.com.au/Resources/2018 Ext1.pdf )
There you can get the 2018 HSC solutions for Extension 1 at http://extension2.com/Resources/2018 Ext1.pdf
(or alternative link: http://advancedmathematics.com.au/Resources/2018 Ext1.pdf )
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