adding and multiplying polynomials

Combine like terms to simplify:
 (5x + 2) + (4x + 5)

• 9x -7
• -9x-11
• 9x+7
• x+7

(4x²+ x) - (x²+ 2x)

• 3x² - x

• 4x² + 2x

• 3x² + 3x

• 3x² + 2x

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

• 2x² + 3x +1
• -2x² - 11x -4
• 2x² + 5x -7
• -2x² + 11x -4

Simplify each expression.
(6b³ + 6 - b⁴) - (8b³ - 6b⁴ + 2)

• 4b⁴ - 2b³ + 7
• 5b⁴ - 2b³ + 4
• b⁴ - 2b³ + 7
• 5b⁴ - 2b³ + 7

2x²(x+5)

• 2x²+5

• 2x²+10x²

• 2x³+5

• 2x³+10x²

Simplify:
3x³(2x² + 9x + 6)

• 6x⁶ + 27x³ + 18x
• 6x³ + 18x² + 9
• 6x⁵ + 27x⁴ + 18x³
• 6x⁶ + 45x³ 

Which of the following is a binomial?

• 11x²

• 11x²+1

• 11x²+9x+1

• -11x²y⁵z⁹

Which of the following is a monomial?

• x+y

• x - 2

• x²+1

• 14x²

(x)(x) =

• 2x

• x²

• 2x²

• x³

x+x =

• 2x

• 3x

• x²

• 2x²