Question

State True or false and Justify by giving an example.
1. Division by 1 is undefined.
I know that it is false but I want an example please give me a example which justify that division by 1 is not undefined ​

Answer 1

Answer:

Step-by-step explanation:

Is 2 = 1?

Algebra Level 1

What is wrong with the following "proof"?

Let a = b=1a=b=1, then a+b=b.a+b=b.

Step 1: a^2 = aba  

2

=ab

Step 2: a^2 - b^2 = ab - b^2a  

2

−b  

2

=ab−b  

2

 

Step 3: (a+b)(a-b) = b(a-b)(a+b)(a−b)=b(a−b)

Step 4: a+b= \dfrac{b(a-b)}{a-b}a+b=  

a−b

b(a−b)

​  

 

Step 5: a+b = ba+b=b

Conclusion: By substituting in a = b = 1,a=b=1, we have 1+1 = 1 \implies 2 = 1.1+1=1⟹2=1.