Simplifying Polynomial Expressions

Add or Subtract to Simplify:
(5x + x² - 4) - (4x - x² + 6)

• 2x² + x + 2 

• x + 2

• 2x² + x - 10 

• x - 10 

6(7k+11)

• 7k+11

• 42k+66

• 13k+16

4(8n+2)

• 4n+2

• 12n+6

• 32n+8

(5x+2)(x²-3x+6)

• 5x³ - 17x² +24x +12

• 5x³ + 17x² - 24x +12

• 5x³ - 13x² + 24x +12

• 5x³ +13x² - 24x - 12

7a(3b - 2c + 4)

• 10ab + 5ac + 11a

• 10ab + 5ac + 28a

• 21ab + 14ac + 28a

• 21ab - 14ac + 28a

Simplify:6b + 7b - 10

• 3b

• 13b - 10

• 13b² - 10

• 3b²

Add these expressions
(x+5) + (2x+10)

• 3x+15

• x-5

• 18x

What is the simplified form of this expression
3x+4+5x+3

• 15x

• 8x+7

• 7x+8

Simplify the Expression. 
9z  - 21 - 3z + 10

• Simplified

• 9z - 21 - 7

• 9z - 11 -3z

• 6z - 11

w + w + w could be simplified as?

• 3w

• 3

• w

• 0