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Multiply Mentally
- (s7)(s2+2s+6)(s-7)\left(s^{2}+2 s+6\right) A) s39s2+20s42s^{3}-9 s^{2}+20 s-42 B) s35s28s42s^{3}-5 s^{2}-8 s-42

Question 126

Multiple Choice

Multiply mentally
- (s7) (s2+2s+6) (s-7) \left(s^{2}+2 s+6\right)


A) s39s2+20s42s^{3}-9 s^{2}+20 s-42
B) s35s28s42s^{3}-5 s^{2}-8 s-42
C) s35s28s+42s^{3}-5 s^{2}-8 s+42
D) s35s2+20s42s^{3}-5 s^{2}+20 s-42

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