Quiz about Review of Rational Expressions

Question 1

Simplifying rational expressions is just simplifying

Accepted Answer

fractions.

Answer

variables.

Answer

proportions.

Answer

numbers.

Question 2

Is the following factoring a trinomial or factoring GCF? $$-15x^5+15x^4-9x$$

Accepted Answer

GCF

Answer

Trinomial

Question 3

Which of the following shows the factorization of $$x^2-x-2$$

Accepted Answer

(x-2)(x+1)

Answer

(x-1)(x-1)

Answer

(x+2)(x-1)

Answer

x(x-1)

Question 4

Which of the following shows the factorization of $$-24+40m+40m^3$$

Accepted Answer

$$8\left(-3+5m+5m^3\right)$$

Answer

$$4\left(6+10m+10m^3\right)$$

Answer

$$\left(x-6\right)\left(x+4\right)$$

Answer

$$8m\left(-3+5m+5m^2\right)$$

Question 5

Simplify. $$\frac{63a^2+9a}{27a^2+9a}$$

Accepted Answer

$$\frac{7a+1}{3a+1}$$

Answer

Cannot be simplified.

Answer

$$\frac{7a}{3a}$$

Answer

$$\frac{7a^2+a}{3a^2+a}$$

Question 6

Factor: $$x^2-2x-8$$

Accepted Answer

(x-4)(x+2)

Answer

(x-6)(x+2)

Answer

(x+4)(x-2)

Answer

(x-8)(x+1)

Question 7

Factor: $$-30n^6+18n^2-36n$$

Accepted Answer

$$-6n\left(5n^5-3n+6\right)$$

Answer

$$2n\left(-15n^5+9n-18\right)$$

Answer

$$\left(x-6\right)\left(x+6\right)$$

Answer

$$-6n^2\left(5n^3-3n+6\right)$$

Question 8

Simplify: $$\frac{42k+54}{42k-54}$$

Accepted Answer

$$\frac{7k+9}{7k-9}$$

Answer

-1

Answer

1

Answer

$$\frac{6\left(7k+9\right)}{6\left(7k-9\right)}$$

Review of Rational Expressions