Practice Quiz for Adding, Subtracting, and Multiplying Polynomials

Find the sum.
(2x² + 5x - 7) + ( 3 - 4x² + 6x)

• 2x² + 3x +1

• -2x² - 11x -4

• 2x² + 5x -7

• -2x² + 11x -4

Add the polynomials.
(3x³ + 3x² – 4x + 5) + (x³ – 2x² + x – 4)

• 4x³ + 1x² – 3x + 1

• 2x³ + 1x² - 5x + 9

• 6x³ + 1x - 1x² - 3

• 3x⁵ +1x - 1x⁵ - 3x

Simplify:
2x ( -2x -3)

• -4x - 3

• x² - 3

• -4x² - 6x

• -4x - 6

Add the following polynomials. Enter the correct answer. (Make sure to use x from your keyboard.) (3x^2+5x-4)+(4x^2-x+14)

Mathematical Equivalence

OFF

Mathematical Equivalence

OFF

5x(2x³+6)

• 10x⁴+30x

• 10x³+30x

• 7x⁴+11x

Simplify:
3x³(2x² + 9x + 6)

• 6x⁵ + 27x⁴ + 18x

• 6x⁵ + 18x² + 9

• 6x⁵ + 27x⁴ + 18x³

• 6x⁵ + 45x³ 

(x+10)(x-10)

• x²  - 100

• x² + 100

• x² + 20x - 100

• x² -20x + 100

Multiply
(4x+3)(2x-1)

• 8x²-2x-3

• 8x-3

• 8x²+6x-3

• 8x²+2x-3

(3x − 6)(7x + 7)

• 21x² − 63x + 42

• 21x² − 21x − 42

• 21x² − 42

• 21x² + 63x + 42