Please tell question 9,1

D e a r s t u d e n t, Q 9 (i) 60 x^{2} - 70 x - 30 \Rightarrow 10 (6 x^{2} - 7 x - 3) [T a k i n g 10 c o m m o n] \Rightarrow 10 (6 x^{2} + 2 x - 9 x - 3) [B y s p l i t t i n g m i d d l e t e r m s] \Rightarrow 10 [2 x (3 x + 1) - 3 (3 x + 1] \Rightarrow 10 (2 x - 3) (3 x + 1) R e g a r d s

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