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P=−4b 2 +6b−9
Q=7b 2 −2b−5
​P−Q=
Your answer should be a polynomial in standard form.

Sagot :

Answer:

−11b^2+8b−4

Step-by-step explanation:

−4b2+6b−9−7b2+2b+5

Simplify by adding terms.

11b2+8b−4