Review Exercise
Unit 4 – Algebraic Expressions and Algebraic Formulas

### This Post Has 15 Comments

1. suzy

This is very helpful as Im a student of class 8th and during zoom class its a little hard to see what my teacher has written on the screen but now I just open this and continue to work!
Amazing I believe!
Keep On The Good Work!

1. Abdullah waris

But this is for class 9

2. Liaqat Ali

Review of key is required as some clerical mistakes found.

3. Student

there is a mistake in Review Exercise Question 2 Fill in the blanks part (i) The degree of the polynomial x2y2 +3xy+y3 The answer is 3 and you have written 4

1. Author

There is no mistake found in it.

2. Fairy

No there is no mistake
Now look deeply. In this question the highest term is x2y2 degree is the highest power of the polynomial. When we will multiply the square of x with the square of y then the answer is 4 which is correct . I hope you,ve understand it😊

1. Author

Ok, We’ll check it.

2. Right

4. Student

It’s 4 bcoz x^2 and y^2 is 4. Sum of x and y will be the degree.

5. Maryam

Sir actually there is mistake in Q no 6 part iii formula is not correct e.g
(a+b)^2+(a-b)^2=2(a^2+b^2) is used in that formula

1. Author

Ok, (Review Code: COMPLI).

6. maryam

there is an mistake in question 1 part 1

1. Author

Ok, We’ll check it.

7. Student

Thank you 😊