Addition and Subtraction of Polynomials

What is the sum of the polynomials? 17m - 12n - 1 + 4 - 13m - 12n ____________________

B. 4m - 24n +3

What is the additive inverse of the polynomial?

B. 6x^3 - 4x^2 + 4x

Which expression can be used to find the difference of the polynomials (4m - 5) - (6m - 7 + 2n)

D. (4m - 5) + (-6m + 7 - 2n)

What is the sum of thy polynomials? (8x2^2 - 9y^2 - 4x) + (x^2 - 3y^2 - 7x)

D. 9x^2 - 12y^2 - 11x

Which expression can be used to find the sum of the polynomials? (9 - 3x^2) + (-8x^2 + 4x + 5)

D. [(-3x^2) + (-8x^2)] + 4x + [9 + 5]

Marcus finds that (3x^2 - 2y^2 + 5x) + (4x^2 + 12y^2 - 7x) = 7x^2 - 10y^2 - 2x. What error did Marcus make?

He combined the terms -2y^2 and 12y^2 incorrectly.

What is the sum of the polynomials? 11x^2 - 5 + x + 4 ____________

11x^2 + x - 1

What is the sum of the polynomials? (6x + 7 + x^2) + (2x^2 - 3)

3x^2 + 6x + 4

Samuel found the difference of the polynomials. (15x^2 + 11y^2 + 8x) - (7x^2 + 5y^2 + 2x) = ____x^2 + 6y^2 + 6x What value is missing from his solution?

8

What is the addictive inverse of the polynomial? -7^2 + x^2y - 3xy - 7x^2

A. 7y^2 - x^2y + 3xy + 7x^2

Which expression can be used to find the difference of the polynomials? (10m - 6) - (7m - 4)

A. [10m + (-7m)] + [(-6) + 4]

What is the sum of the polynomials? (m + n + 3) + (m + n + 4)

C. 2m + 2n + 7

What is the difference of the polynomials? (m^2 n^2 - 7) - (mn + 4)

C. m^2 n^2 - mn - 11