Question

please tell me...what is whole square of -3root 2

Answer 1

Answer:  1.414

Step-by-step explanation: Before you understand A + B Whole Square : (a + b)2 = a2 + b2 + 2ab, you are advised to read:  

How to Multiply Variables?  

How to Multiply Polynomials?  

What is Exponential Form?  

How this identity of (a + b)2 = a2 + b2 + 2ab is obtained:  

Taking LHS of the identity:  

(a + b)2  

This can also be written as:  

= (a + b) (a + b)  

Multiply as we do multiplication of two binomials and we get:  

= a(a + b) + b(a + b)  

= a2 + ab + ab + b2  

Add like terms and we get:  

= a2 + 2ab + b2  

Rearrange the terms and we get:  

= a2 + b2 + 2ab  

Hence, in this way we obtain the identity i.e. (a + b)2 = a2 + b2 + 2ab