Addition and Subtraction of Polynomials Answers

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Find each sum.(3n2 – 5n + 6) + (–8n2 – 3n – 2) =

–11n2 – 8n – 4

–11n2 – 2n + 4

–5n2 – 8n + 4

–5n2 – 2n – 4

(5a2 + 4ab – 3b2) – (–5ab + 4b2 + 3a2) = a2 + ab + ( b2)

Answers:

(5a2 + 4ab – 3b2) – (–5ab + 4b2 + 3a2) =:2

(5a2 + 4ab – 3b2) – (–5ab + 4b2 + 3a2) =:9

(5a2 + 4ab – 3b2) – (–5ab + 4b2 + 3a2) =:-7

(0.4k3 – 2.5k) – (2.4k3 + 3k2 – 1.2k) =

–2.8k3 – 3k2 – 3.7k

–2.8k3 + 3k2 – 1.3k

–2k3 – 3k2 – 1.3k

–2k3 + 3k2 – 3.7k

) inches

Answer:

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