8th QUIZ CH 5.6-5.8 Review

6k² * k

• 6
• 6k
• 6k²
• 6k³

2n⁴ * 6n⁴

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

Simplify:
x²(2x+3)

• x²+2x+3
• 2x+3
• 2x²+3x
• 2x³+3x²

Simplify the expression.
-3x²( 7x² - x + 4)

• -21x⁴ + 3x³ -12x²
• 7x² - x + 4 (-3x²)
• 21x⁴ + 3x³ + 12x²
• -12x² + 3x³ -21x⁴

Simplify
x³⋅x⁶

• x⁹
• x¹⁸
• x¹
• x²

5x(4x³ + 8)

• 9x⁴ + 40x
• 20x⁴ + 40x

4m(3m⁷ + 2m⁵)

• 7m⁷ + 6m⁶
• 12m⁸ + 8m⁶

-8x(x - 8)

• -8x² + 64x
• -8x² - 64

(3c²)(10c⁷)

• 13c⁹
• 30c⁵
• 30c⁹
• -30c⁹

Simplify:
x²(2x+3)

• x²+2x+3
• 2x+3
• 2x²+3x
• 2x³+3x²