Prove that
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Proof in explanation.

Step-by-step explanation:

I'm going to assume you mean "greater than or equal to".

We know .

We know this because any real number squared will result in a positive or zero result.

Let's expand the left hand side:

Distribute:

Combine like terms:

Commutative property of addition:

Add on both sides:

Now we wanted to show . Our right hand side almost appeared that way except the factor of 2 present there.

Let's go back to our inequality that we got:

Divide both sides by 2:

Note: Half of a positive number is less than that positive number.

This inequality says we would like it to say in the end:

Step-by-step explanation:

hello :

note : add for your statement : x>0 and y>0

look this solution :

i dont know it

step-by-step explanation: