Adding and Subtracting Polynomials

What is the first step to rewrite the polynomial without parentheses?

• Combine like terms

• Distribute the positive and negative sign

• Add and subtract

• Write in descending order

In the first example, what is the result of combining like terms -5x^2 and 2x^2?

• -7x^2

• 3x^2

• -3x^2

• 7x^2

What is the result of combining like terms 12x and -8x in the first example?

• -4x

• -20x

• 4x

• 20x

In the second example, what is the result of combining like terms y and 8y?

• -15y

• 9y

• -9y

• 15y

What is the result of combining like terms -7x and -9x in the second example?

• 2x

• -16x

• -2x

• 16x

What is the correct order of the polynomial in the first example after combining like terms?

• -3x^2 + 6x

• 6x - 3x^2

• -3x^2 - 6x

• -6x - 3x^2

What is the correct order of the polynomial in the second example after combining like terms?

• 9y - 6x

• 6x - 9y

• 9y + 6x

• -6x + 9y

What is the result of distributing the negative sign in the second example?

• y + 7x + 8y - 9x

• y - 7x - 8y + 9x

• y + 7x - 8y + 9x

• y - 7x + 8y - 9x

What is the result of distributing the positive sign in the first example?

• -5x^2 + 12x + 2x - 18x

• 5x^2 + 12x + 2x + 18x

• 5x^2 - 12x + 2x - 18x

• -5x^2 - 12x + 2x + 18x

What is the final step in rewriting the polynomial without parentheses?

• Write in descending order

• Combine like terms

• Distribute the positive and negative sign

• Write in ascending order