Question

Question 1:                                                                                                            

Identify the variables, coefficients and terms in the following expressions:

(a)   8x – 64y            (b) 3x + 4y

 

Question 2:                                  

Draw factor tree for the following algebraic expressions:                                      

(a)   5pqr               (b) 3a2b

 

Question 3:

Find the sum of x+y and x-y                                                                                            

 

Question 4:

Find the difference between a+2b and 2a-b                                                             

 

Question 5:

Consider the expression 2x-3. Find the value of this expression when x=2 and x=4.

 

Question 6:

Find the product of (i) 3p (4q + 5r)            (ii) (2x2y + 3y2x) 5x2y2  (iii) (3x+4y)(5x-6y)

 

Question 7:

Simplify the following

(a)   (3p+4q)2            (b)      (c) (5x- 6y)2

 

Question 8:

If x² + 1/x² = 82/9 , find the value of  x²-1/x²                                                                 ​

Answer 1

Answer:

question 1

a} Variable= x ; y

Coefficient= 8 ; 64

Term= 8x ; 64y

b} Variable= x ; y

coefficient= 3; 4

Term= 3x ; 4y

Step-by-step explanation:

question 2

a} 5pqr

/. \

5. pqr

/ \

p. qr

/. \

q. r

b} 3a2b

/. \

3a. 2b

/. \. /. \

3. a. 2. b

question 3

a} x+y+x-y

2x+y-y

= 2x ans

question 4

= a+2b-2a-b

{+a-2a ; +2b-b}

= b-a ans

question 5

2x-3

when, x= 2

2×2-3

4-3

= 1 ans

when, x = 4

2×4-3

8-3

= 5 ans

question 6

ummm... I am a little confused with it... I am really sorry...

question 7

a} (3p+4q)2

= 6p+8q ans.

b} (5x-6y)2

= 10x- 12y ans.

question 8

ummm... sorry!