Question

2. Find the square of :
315
(i)
(ii) V3 + 2
5
(iii) V5 - 2
(iv) 3 + 215​

Answer 1

Answer: We know that, (A+B)(C+D)=A×(C+D)+B×(C+D)

                                                     =AC+AD+BC+CD

(i) (3+  

3

​

)(2+  

2

​

)=(6+2  

3

​

+3  

2

​

+  

6

​

)

(ii) (  

5

​

+  

2

​

)  

2

=(5+2+2  

10

​

)=(7+2  

10

​

)

(iii) (3+  

3

​

)(3−  

3

​

)=(9−3)=6

(iv) (  

5

​

−  

2

​

)(  

5

​

+  

2

​

)=(5−2)=3

Step-by-step explanation: