Multiplying Polynomials and Dividing Polynomials by a Monomial

What is the width of this rectangle?

•  5x⁴ + 10x³
• x + 15x³
• x + 3
• x⁴ + 3x³

Divide (6x²+12x) by 3x

• 2x+4
• 2+6/3x
• 2+4/x
• 3+6/2x

Divide 8x² -4x + 12  by 2x

• 4x+2
• 4x-2+6/x
• 4x-2
• 4x-2+1/(6x)

• 5w ² − 4w + 3
• 12w ² − 9w + 6
• 12w ² − 12w + 9
• 5w ² − 12w+ 9

Multiply

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Simplify:
x²(2x+3)

• x²+2x+3
• 2x+3
• 2x²+3x
• 2x³+3x²

7y(5y² + 2y + 3)

• 35y³ + 14y² + 21y

• 12y³ + 14y² + 21y

• 35y³ + 14y² + 21

• 12y³ + 14y² + 10y

10(x+y+z)

• 10x+y+z

• 10x+10y+z

• 10x+10y+10z

• 10xyz

Simplify:
2x ( -2x -3)

• -4x - 3
• x² - 3
• -4x² - 6x
• -4x - 6