Question

Can anybody send the solution of algebra practice set 3.1 Q.1 and 2 of 9th Maths Ssc board​ ​

Answer 1

Hope it helps you.........

Answer 2

Answer:

Question 1:

State whether the given algebraic expressions are polynomials? Justify.

(i) y +

1

y

(ii) 2 - 5

√

x

(iii) x2 + 7x + 9 (iv) 2m-2 + 7m - 5 (v) 10

ANSWER:

In an algebraic expression, if the powers of the variables are whole numbers then the algebraic expression is a polynomial.

(i)

y+

1

y

=y+y-1

Here, one of the powers of y is −1, which is not a whole number. So, y +

1

y

is not a polynomial.

(ii)

2 - 5

√

x

=2-5x

1

2

Here, the power of x is

1

2

, which is not a whole number. So, 2 - 5

√

x

is not a polynomial.

(iii)

x2 + 7x + 9

Here, the powers of the variable x are 2, 1 and 0, which are whole numbers. So, x2 + 7x + 9 is a polynomial.

(iv)

2m-2 + 7m - 5

Here, one of the powers of m is −2, which is not a whole number. So, 2m-2 + 7m - 5 is not a polynomial.

(v)

10 = 10 × 1 = 10x0

Here, the power of x is 0, which is a whole numbers. So, 10 is a polynomial (or constant polynomial).

Question 2:

Write the coefficient of m3 in each of the given polynomial.

(i) m3 (ii)

-3

2

+ m -

√

3

m3 (iii)

-2

3

m3 - 5m2 + 7m - 1

ANSWER:

(i)

Coefficient of m3 = 1

(ii)

-3

2

+ m -

√

3

m3

Coefficient of m3 = -

√

3

(iii)

-2

3

m3 - 5m2 + 7m - 1

Coefficient of m3 = -

2

3

Step-by-step explanation:

hope it works...