One plus one does equal two. If you have one object, then bring in another object, you will have one more than what you started with. That would be two.
This is called the Abel-Ruffini theorem.
You cannot. What you have in the question is an expression. An expression cannot be proven. You need an equation (or inequality).
Until an "equals" sign shows up somewhere in the expression, there's nothing to prove.
This would be a real bear to prove, mainly because it's not true.
You cannot prove it since it is not true for a general quadrilateral.
One plus one does equal two. If you have one object, then bring in another object, you will have one more than what you started with. That would be two.
No you can not prove that 9 +10 = 21.
I believe that's usually treated as an axiom, meaning you don't prove it.
This is called the Abel-Ruffini theorem.
use you brain
a) Everyone knows what one and two are, so they will know 1 + 1 = 2 b) Assuming they do not know what one and two are, it will be impossible to explain to them 1 + 1 = 2, because these definitions are ESSENTIAL to prove 1 + 1 = 2.
You cannot. What you have in the question is an expression. An expression cannot be proven. You need an equation (or inequality).
Using a calculator
Until an "equals" sign shows up somewhere in the expression, there's nothing to prove.
To prove that 2k 2k plus 1-1 by induction is a step by step process. But the induction 2 is not equal to 2 to the power of 0 take away 1.
Yes