QZ#4: CFA 2.1: Adding and Subtracting Polynomials

Which of the following expressions is a fifth-degree binomial?

• 6x⁵y⁴ - y⁵x² + 6

• 17x⁵y + 5xy⁶

• 2xy² - 5y⁵

• x² - 2xy +3x +5y - 2

Which of the following is (-5x + 4) - (3x² -7x +4) simplified and written in standard form?

• 3x² - 12x +8

• 2x - 3x²

• -3x² +7x - 5x

• -3x² +2x

What is the standard form of 7x² - 4 +6x³ - 4x - x⁴

• -4 - 4x + 7x² + 6x³ - x⁴

• - x⁴ + 6x³ + 7x² - 4x - 4

• -4 - 4x + 7x² +6x³ + x⁴

• x⁴ + 6x³ + 7x² - 4x - 4

Combine like terms and write 4y + 5y² - 6 - 5y +27 -y² in standard form.

• 5y² - y² - 5y + 4y +27- 6

• -9y² - 1y + 21

• 4y² - y - 21

• 4y² - y + 21

Simplify. Write your answer in standard form.

(4x³ + 6x - 7) + (3x³ - 5x² - 5x + 9).

• -5x² + 7x³ + 1x + 2

• 7x³ - 5x² + 1x + 2

• 2 + 1x - 5x² + 7x³

• 7x³ - 5x² - 11x + 2