Variables and expressions Quiz 1

Question 1

Identify the correct type of variable expression, if the expression is $$5{x^4} + 2{x^3} + {x^2} + 9$$ .

Accepted Answer

Polynomial

Answer

Monomial

Answer

Binomial

Answer

Trinomial

Question 2

Evaluate the variable expression $$7{x^2} + 3x - 9$$ at $$x =  - 3$$ .

Accepted Answer

45

Answer

63

Answer

9

Answer

50

Question 3

Find the degree of the polynomial of the following function, $$ \ f(x) = {(x + 3)^3}(x - 3)(2{x^2} + 1)$$

Accepted Answer

3

Answer

6

Answer

5

Answer

7

Question 4

Find the value of $$K$$ , if the expression $${x^3} - 2x + K$$ is equivalent to 9 at $$x =  - 3$$ .

Accepted Answer

-6

Answer

-5

Answer

6

Answer

None of these

Question 5

The polynomial is $$5{x^2} + 12x + 4$$ . If $$p$$ and $$q$$ are roots of the given polynomial, find the value of $$\dfrac{p}{q} + \dfrac{q}{p}$$ .

Accepted Answer

$$\dfrac{{26}}{5}$$

Answer

$$\dfrac{1}{5}$$

Answer

$$\dfrac{{26}}{{25}}$$

Answer

None of these