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P= -4b^2+6b-9 Q= 7b^2-2b-5 P-Q=
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P= -4b^2+6b-9
Q= 7b^2-2b-5
P-Q=
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Mathematics
3 years
2021-08-28T16:45:39+00:00
2021-08-28T16:45:39+00:00 1 Answers
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Answers ( )
Answer:
P – Q = – 11b² + 8b – 4
Step-by-step explanation:
P – Q
= – 4b² + 6b – 9 – (7b² – 2b – 5) ← distribute parenthesis by – 1
= – 4b² + 6b – 9 – 7b² + 2b + 5 ← collect like terms
= – 11b² + 8b – 4