EXERCISE 10.4 | TS-CLASS 7TH-MATHS-CHAPTER 10-ALGEBRAIC EXPRESSIONS||

Full exercise 10.4 has been solved in an easy and simple manner. It includes solution of questions from Question 1 to Question 10.
Questions:
00:00 Q1. Add the following algebraic expressions using both
08:26 Q2. Simplify: 2x2 + 5x – 1 + 8x + x2 + 7 – 6x + 3 – 3x2
09:49 Q3. Find the perimeter of the following rectangle?
11:08 Q4. Find the perimeter of a triangle whose sides are 2a+3b,
12:37 Q5. Subtract the second expression from the first expression
18:55 Q6. Subtract the sum of x2-5xy+2y2 and y2-2xy-3x2 from the
21:46 Q7. What should be added to 1+2x-3x2 to get x2-x-1?
23:18 Q8. What should be taken away from 3x2-4y2+5xy+20 to get –
24:25 Q9. The sum of 3 expressions is 8+13a+7a2. Two of them are
26:06 Q10. If