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(?27)^2/3

there

x=((180*atan_rad((419/25000)))/(pi))

there 

tan x = 0.01676 what is x?

You should use the calculator here. Use the Inverse Tan. You get that by pressing the "2nd" key first and then the "atan", which will give you your answer.

(reply)

I didn't realize that.  But it is the only way I can find the square cube (raising the number to the 1/3), because my calculator doesn't have a cube root button.  This calculator is also pretty old, so I don't know if it changes anything, but thanks for the input!

But am I right in thinking that it's doing something wierd when I square a negative number and I get another negative number?  (That was my original question)

Try the calculator here. If you don't know how to use the power key "x^y", then multiply 9 by itself 4 times: 9 x 9 x 9 x 9=?. But you should learn how to use the power key. First, you enter 9, then press the "x^y" key, then enter 4, followed by = sign, and you should get your answer.Compare it to multiplying 4 9s, and see if it is the same answer.

9⁴ = 9 x 9 x 9 x 9 = 6561

My first thought is that your question makes no sense, but maybe if I play with it it will.  I will take a look.

\([(x+2^2 *3):17+2^2 *3^2*5:15]:3^3 +5=7\\ [(x+4 *3):17+4 *9*5:15]:9 +5=7\\ [(x+12):17+180:15]:9 +5=7\\ [(x+12):197:15]:14=7\\ \)

No, it makes no sense. 

I'm not familiar with TI-89 calculator. But you should know that most calculators will not allow you to raise a negative number to any fraction, because (-27)^2/3=(-27^2)^1/3=-729^1/3, which means you are taking the 3rd root of negative number, which most calculators cannot do. Taking any root of a negative number is considered a "complex operation", which involves square root of -1 or i. In fact, the answer to your question is=9 (-1)^(2/3), in complex operation.

237/7 = 33.8571, but if you're trying to read a 237-page book in 7 days, I'd read 34 pages a day (been there, done that ;) )

GET OFF THIS SITE, YOU FOUL-MOUTHED IDIOT. YOU THINK YOU OWN IT??

 [(x+2^2 *3):17+2^2 *3^2*5:15]:3^3 +5=7                                                                                     x+12:197:15:32 = 7

Google for it: "How to find square root using Newton's Method"

what is3.2 X 10^33=3.2 X 10^33=32 + 32 zeros!!!!

   -4(16 - 37)^2= -1764

   1. ((x-2) / (x+2))+(1 / (x2 -4))-((x+2) / (2-x))=(2x^2+9)/(x^2-4)

   2. ((x-3) / (x+3))-(1 / (x-3))+((x+2) / (3-x))=-(12x)/(x^2-9)

3 2/3 = 3.6666667    18/3.6666667 = ?

4.909090909090909

(-3/4)^3  =  -3/4  x -3/4  x -3/4 = -27/64    or   -0.421875

Duh!   One is a penny.....this is the ONE that is NOT a quarter....and the other is a quarter.

10^1.6020599        or    4 x 10^1

Write each expression as a product or quotient of powers, then evaluate it. (3X5)^3

(3X5)^3=3^3 X 5^3=27 X 125=3,375

Just use the calculator by dividing 3/2 and see what you get. And then divide 25/4 and see what you get, and compare the two.

As follows:

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(-3/4)^3=-0.421875

1. (x-2/x+2)+(1/x2 -4)-(x+2/2-x)= (3x)/2-2/x-3

2. (x-3/x+3)-(1/x-3)+(x+2/3-x)=x-4/x+20/3