Subtract ( 2 + − 7) from 3 2 − 8 and find the value of the expression obtained for b= -3
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Answer:
2b 2-b 3+7b-8
Step-by-step explanation:
If we If we subtract b(b 2 +b−7)+5 from 3b 2 −8 then we get, (3b 2 −8)−{b(b 2 +b−7)}
=2b 2 −b 3 +7b−8.
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