Multiplying Polynomials

5xy(6x-y)

• 11x² - y²

• 30x² + y²

• 30x²y - 5xy²

• 11x²y + 5x²y²

(3x - 5)(x² - 5x +6)

• 3x³ - 20x² + 43x - 30
• 3x^{2 -} - 43x
• 3x³ -25x -30
• 3x³ +25x

(6m³n³ )(8m²n³)

• 48m⁵n⁹

• 48m⁶n⁶

• 48m⁵n⁶

• none of the above

(3u⁴v⁵)( 7u²v³)

• 21u²v²

• 14u⁶v⁸

• 21u⁸v¹⁵

• 21u6v8

Find the volume of the rectangular prism with length ( x + 2) width ( x - 4) and height ( 2x + 1). (HINT: V = lwh)

• x² - 2x - 88x

• 2x² - 2x - 8

• 2x³ - 3x² - 18x - 8

• 2x³ - 5x² - 18x - 8

Multiply  7x²y³ (2x⁴y⁵+6xy³)

• 14x⁸y¹⁵+42x²y⁹
• 9x⁶y⁸+13x³y⁶
• 14x⁶y⁸+42x³y⁶
• 14x⁶y⁸+42x²y⁶

Tags

CCSS.8.EE.A.1

Simplify the expression.

-3x²( 7x² - x + 4)

• -21x⁴ + 3x³ - 12x²

• 7x² - x - 12x²)

• 21x⁴ + 3x³ + 12x²

• -21x⁴ - 9x²

Find the product $\left(-8m+8n\right)\left(6m^2-7mn+8n^2\right)$  

•  $-48m^3+104m^2n-120mn^2+64n^3$  

•  $-48m^3+64n^3+116mn^2$  

•  $-48n^3+64m^3+104mn^3-120m^2n$  

•  $-48m^2+104m^2n+120mn^2+64n^2$  

A square has a side length of 2x + 7. Find a simplified expression that represents the area.

• $4x^2+28x+49$

• $4x^2+14x+49$

• $4x^2+28x+14$

• $4x^2+49$

Simplify

-3a²b³(4ab - 7a³)

• -12a²b² + 21a⁵b³

• -12a²b³ - 21a²b³

• 84a⁶b⁴

• -12a³b⁴ + 21a⁵b³