Multiply Monomials

2n⁴ * 6n⁴

• 8n⁴
• 12n⁸
• 8n¹⁶
• none of the above

Simplify
x³⋅x⁶

• x⁹
• x¹⁸
• x¹
• x²

(3c²)(10c⁷)

• 13c⁹
• 30c⁵
• 30c⁹
• -30c⁹

6k² * k

• 6
• 6k
• 6k²
• 6k³

6m³n³ * 8m²n³

• 48m⁵n⁹
• 48m⁶n⁶
• 48m⁵n⁶
• none of the above

9xy² * 9x⁵y²

• 81x⁶y⁴
• 18x⁶y⁶
• 9x⁶y⁴
• none of the above

Simplify the following expression:
-8x + 4x

• -12x
• -4x
• 4x
• 12x

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4
• 2a + 2b + 4
• 8ab
• 4ab + 4

Simplify the expression: 2x + 1 + 7x 

• 10x
• 10
• 9x + 1
• 9 + 1x

Simplify (-7y²)(5y⁴)

• -35y⁶
• -2y⁶
• -35y⁸
• -2y⁸