$\frac{40x^4}{-5x^2}$

• $-8x^2$

• $\frac{x^2}{8}$

• $35x^8$

• none of these

Answer explanation

Tags

5.1

$\left(4a^3c^2\right)^3\cdot\left(-3ac^4\right)^2$

Simplify

• $576a^{11}c^{14}$

• $-12a^4c^8$

• $108a^8c^{11}$

• $576a^7c^{12}$

Answer explanation

Tags

5.1

Simplify

$\frac{40a^{-1}b^{-7}}{20a^{-5}b^{-9}}$

• none of these

Answer explanation

Tags

5.1

Simplify

$\frac{x^0+5^0}{20}$

• $\frac{1}{4}$

• $\frac{1}{10}$

• $\frac{x}{4}$

• $0$

Answer explanation

Tags

5.1

Find the sum.

• 20x⁴ - 3x³ + 8x² - 6x - 2

• 20x⁴ - 7x³ - 7x² - 6x - 2

• 20x⁸ - 3x³ - 6x² - 2

• 20x⁴ - 3x³ - 6x - 2

Answer explanation

Tags

5.2-5.3

Find the difference (subtract).

(4n² - 8n + 4) - (8n² + 4n + 1)

• -4n² - 12n + 3

• -12n² - 12n + 5

• -4n² - 4n + 3

• -12n² - 4n + 3

Answer explanation

Tags

5.2-5.3

Factor the following expression completely.
 $2x^2+12x-54$  

•  $\left(x-6\right)\left(x-10\right)$  

•  $2\left(x-9\right)\left(x+3\right)$  

•  $2\left(x+9\right)\left(x-3\right)$  

• Not Factorable

Answer explanation

Tags

5.4

Factor the following expression completely.
 $100y^2-16$  

•  $4\left(5y+2\right)\left(5y-2\right)$  

•  $4\left(5y+4\right)^2$  

•  $4\left(25y+4\right)^2$  

•  $4\left(-5y+2\right)\left(5y-2\right)$  

Answer explanation

Tags

5.4

Factor

r² -16r + 60

• (r - 15)(r + 4)

• (r - 6)(r + 10)

• (r - 6)(r - 10)

• (r +30)(r - 2)

Answer explanation

Tags

5.4

Factor the following expression:
$x^2-9x$

• $x\left(x-9\right)$

• $x\left(x-1\right)$

• $x\left(x-4\right)$

• $\left(x+8\right)\left(x-4\right)$

Answer explanation

Tags

5.4