A2: Unit 2 Practice Test

The following polynomial is written in standard form:
7x³ - 11x² + 8x - 5

• True
• False

If f(x) = 6x + 4x⁴ - 3x² and g(x) = 7x⁴ + 5x² + 8x

Find f(x) + g(x).

• 11x⁴  + 2x² + 14x
• 16x⁴  + x² + 14x
• 11x⁴  + x² + 14x
• 11x⁴  + 2x² + 10x

If f(x) = 4x⁴ - 8x + 4 and g(x) = 8x² + 4x⁴ + 1

Find f(x) - g(x)

• -8x² - 8x + 3 

• -7x² - 8x + 3 

• -6x² - 8x + 3

• -7x² - 4x + 3

Multiply the monomial by the polynomial:

7x²y³ (2x⁴y⁵+6xy³)

• 14x⁸y¹⁵ + 42x²y⁹

• 9x⁶y⁸ + 13x³y⁶

• 14x⁶y⁸ + 42x³y⁶

• 14x⁶y⁸ + 42x²y⁶

Multiply the binomial and the trinomial:

(5x + 2)(x² - 3x + 6)

• 5x³ - 17x² +24x +12
• 5x³ + 17x² - 24x +12
• 5x³ - 13x² + 24x +12
• 5x³ +13x² - 24x - 12

Expand the binomial:

(x + 2)³

• x³ + 6x² - 12x + 8
• x³ + 6x² + 12x + 8
• x³ - 6x² + 12x - 8
• x³ + 4x² + 12x + 6

• x - 7
• x² - 7
• x + 7
• x² + 3x - 54

• x - 8
• x + 5

• -415

• -89

• 11

• 335