## anonymous one year ago What's x*x

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1. Nnesha

exponent rule when multiply same bases we should add their exponents $\huge\rm x^m \times x^n = x^{m +n}$

2. Nnesha

x is same as x to the one power $\huge\rm x^1 \times x^1$

3. amoodarya

maybe he/she mean adjoint !

4. Nnesha

btw is it multiplication sign ?? * ??? ;D

5. Nnesha

maybe LOL

6. SolomonZelman

x • x, like this?

7. SolomonZelman

you are multiplying some number x (that is unknown) BY/TIMES this, same, number x. You can't really simplify or calculate that much, because you don't know the value of this "x", and all you can do right now is just write x•x. But, actually, there is one thing you can do to make it look better.

8. SolomonZelman

When I say for example: 3•3•3•3•3 How many threes am I multiplying together? I am multiplying 5 threes together. So this way we can write this: 3⁵ Saying, that you are multiplying 3, and how many times do you do this(?) you do this 5 times. 5 is called the exponent. (in this case) 3 is called the base. (in this case) ------------------------------------------------ Same thing we can apply here. Our expression is: x•x What are we multiplying? The x. How many x's are there in this multiplication? there are 2 of them. So, you can therefore rewrite x•x, as x².

9. SolomonZelman

Now can you answer 2 questions for me please (optional) : Question 1: Write the following expression in full: The expression is: 4⁶ Question 4: How would you write the following expression using "exponents" (as i have showed with 3⁵ and x²) : The expression is: 8•8•8•8•8•8

10. SolomonZelman

(oh this question 4, is really question 2) and to write an exponent you can use a ^ So if you say like 4^3, that is same as 4³

11. anonymous

2x

12. anonymous

it is $X^{2}$

13. anonymous

the upper number is a power which tells that how many times the number is multiplied by its self