Question

please answer all answer
all are class 9 maths question​

Answer 1

Answer:

Q1 a. true

b. true

c. true

d. true

e. false

f. maybe,false

Q2

a. Since the highest power of x is 1, the degree of the polynomial 2x−1 is 1.

b. −10 is a non-zero constant. A non-zero constant term is always regarded as having degree 0.

c. Since the highest power of x is 5, the degree of the polynomial x

3−9x+3x 5 is 5.

d. y ³ (1−y ⁴)=y 3 −y⁷

since the highest power of y is 7, the degree of the polynomial is 7.

Q3

(i) Coefficient of x² in the following 6π x+x² −1, Coefficient of x² =1

(ii) 3x−5, coefficient of x ²

=0

(iii) (x−1)(3x−4)=3x−7x+4

Now coefficient of x ²

=3

(iv) (2x−5)(2x² −3x+1)

=4x ²−6x ²+2x−10x ² 15x−5

=4x² −6x² +17x−5

aur kudh krle me thak gya hu