If \( A=4 x^{3}-5 x+7, B=2 x^{3}-x^{2}+3 \) and \( C \) \( =5 x^{3}-8 x^{2}+10 \), then \( A-2 B...

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If \( A=4 x^{3}-5 x+7, B=2 x^{3}-x^{2}+3 \) and \( C \)
\( =5 x^{3}-8 x^{2}+10 \), then \( A-2 B-C \) is
(IV )
(a) \( 5 x^{3}-2 x^{2}+x+4 \)
(b) \( -5 x^{3}+10 x^{2}-5 x-9 \)
(c) \( x^{3}+10 x^{2}-5 x+9 \)
(d) \( 5 x^{3}-8 x^{2}+x-1 \)
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