Algebraic Formulae | Class 7 | Practice Set 51
Algebraic Formulae Class 7 Practice Set 51, all the examples of this practice set are solved by using the formula given in this post.
Practice-set-51The formula that we will be using for solving the examples of this practice set is,
(a + b)(a – b) = a^2 – b^2
The examples given in this practice set are expanded by using the formula mentioned above and then simple calculations can be done to get the required answer.
Also read : Pythagoras Theorem | Class 7 | Practice Set 48
For solving these types of examples we need to by heart the formulae and by performing simple mathematical calculations we can solve them.
The pdf file which contains the simple solutions of these equations might not load immediately but be patient and after 2-3 seconds the file will get loaded automatically.
If some pages of this file doesn’t open on its own then try to zoom them to 110% and your problem should get solved.
Also read : Pythagoras Theorem | Class 7 | Practice Set 49
The examples solved in this practice set are given below –
Practice Set 51
(ii) (3x – 5) (3x + 5)
(iii) 54 × 46 2. Use the formula to multiply the following.
(i) (x + y) (x – y) (iii) (a + 6) (a – 6) Use the formula to find the values.
(i) 502 × 498 (ii) 97 × 103 (iv) 98 × 102
In this way all the examples are solved easily by using the formula mentioned above. Try to solve all these examples on your own and if you face any difficulty then go through the answers given in this post.
All the practice sets given in this chapter are dependent on the respective formulae. By using these formulae we can solve all the examples given in this chapter.
