Adding and Subtracting Polynomials iStart

Add to Simplify:

(4x – 2x³) + (5x³ – 4x + 5)

• 3x³ + 5

• 3x³ + 8x + 5

• 3x² + 5

• 7x³ + 8x + 5

Find the sum.

(3 – 2x + 2x²) + (4x – 5 + 3x²)

• 7x – 7x + 5x²

• 5x² + 2x – 2

• 5x²

• 5x² + 6x + 8

What is the perimeter of the triangle shown?

• 9r² + r – 5

• 9r⁴ + r² – 4

• 9r² – r + 4

• 9r² + r – 4

Add or Subtract to Simplify:

(4x² + x) – (x² + 2x)

• 3x² – x

• 4x² + 2x

• 3x² + 3x

• 3x² + 2x

Add or Subtract to Simplify:

(4n⁴ – 8n + 4) – (8n² + 4n⁴ + 1)

• –8n² – 8n + 3

• –7n² – 8n + 3

• –6n² – 8n + 3

• –7n² – 4n + 3

Add or Subtract to Simplify:

(5x + x² – 4) – (4x – x² + 6)

• 2x² + x + 2

• x + 2

• 2x² + x – 10

• x – 10