MSM 9

• Rational

• Irrational

• imaginary

• complex

• an integer

• an irrational 

• a rational

• None of these

• 1

• 2

• 3

• 0.56

• 0.056

• 0.0056

• 5.6

Every point on a number line represents

• a natural number

• a rational number

• one and only one real number

• an irrational number

1. Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer. (i) 4x 2 – 3x + 7 (ii) y 2 + 2 (iii) 3 2 t t + (iv) y + 2 y (v) x 10 + y 3 + t 50

• (ii) and (iii) are polynomials in one variable, (v) is a polynomial in three variables, (i), (iv) are not polynomials, because in each of these exponent of the variable is not a whole number.

• (i) and (ii) are polynomials in one variable, (v) is a polynomial in three variables, (iii), (iv) are not polynomials, because in each of these exponent of the variable is not a whole number.

• (iv) and (vii) are polynomials in one variable, (v) is a polynomial in three variables, (iii), (ii) are not polynomials, because in each of these exponent of the variable is not a whole number.

• (ii) and (iii) are polynomials in one variable, (vi) is a polynomial in three variables, (i), (iv) are not polynomials, because in each of these exponent of the variable is not a whole number.

Which of these is in Standard Form?

What is the number of zeroes of the polynomial y = p(x)?

• 3

• 2

• 1

• 0