Addition and Subtraction of Polynomials Answers

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(3a2 – 5ab + b2) + (–3a2 + 2b2 + 8ab)Which of the following shows the sum of the polynomials rewritten with like terms grouped together?

[3a2 + (–3a2)] + (–5ab + 8ab) + (b2 + 2b2)

[3a2 + (–3a2)] + (–5ab + 2b2) + (b2 + 8ab)

[3a2 + 3a2] + (5ab + 8ab) + (b2 + 2b2)

[3a2 + 3a2] + (5ab + 2b2) + (b2 + 8ab)

Use your result from the previous task to find the sum.

6ab2

3ab + 3b2

-6a2 + 3ab + 3b2

-6a2 - 13ab + 3b2

What is the sum of the polynomials?

1.3t3 + t2 – 42t + 8

1.3t3 + t2 – 6t + 8

1.9t3 + 8.4t2 – 42t

1.9t2 – 42t + 8

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