1. andriod09 Group Title

|dw:1348498599367:dw| ik what the answers are, i just need help finding how to get them They are 5", 12", and 13"

The Theorem is a^2 + b^2 = c^2 Where a and b are sides of the right triangle and c is the hypotenuse of the right triangle.

3. andriod09 Group Title

ik the thirum, i just havn't done it in about 3 years.

Ok. Let a = x and b = x+7 therefore, (x)^2 + (x+7)^2 = (8+x)^2

5. andriod09 Group Title

okay, then what?

6. andriod09 Group Title

7. andriod09 Group Title

@cshalvey @Callisto @Yahoo!

8. Yahoo! Group Title

$(x+8)^2 = x^2 + (x+7)^2$

9. Yahoo! Group Title

nw expand this....... $(a+b)^2 = a^2 + 2ab + b^2$

10. andriod09 Group Title

please do not use the equation button i have a mathjax error and it annoys me. i see the slashes and brackets and braces.

11. erica.d Group Title

(x+8)^2=x^2+(x+7)^2

12. Yahoo! Group Title

lol.... ) (x)^2 + (x+7)^2 = (8+x)^2

13. andriod09 Group Title

okay?? then you do??????

14. Callisto Group Title

Expand the terms for both sides of the question, then simplify it. As Yahoo! mentioned, you can expand the term (a+b)^2 by using the identity (a+b)^2 = a^2 + 2ab + b^2. If you don't know where this identity comes from, you can simply perform multiplication for the term, i.e. (a+b)^2 = (a+b)(a+b), now expand it. What have you got for now?

15. andriod09 Group Title

|dw:1348501546848:dw|

16. andriod09 Group Title

@Callisto that made no sense to me. :c

17. Callisto Group Title

May I know what made no sense to you?

18. andriod09 Group Title

"Expand the terms for both sides of the question, then simplify it. As Yahoo! mentioned, you can expand the term (a+b)^2 by using the identity (a+b)^2 = a^2 + 2ab + b^2. If you don't know where this identity comes from, you can simply perform multiplication for the term, i.e. (a+b)^2 = (a+b)(a+b), now expand it."

19. Callisto Group Title

Which part you don't understand?

20. andriod09 Group Title

the expansion parts.

21. Callisto Group Title

Do you know how to expand (a+b)^2?

22. andriod09 Group Title

no. im homeschooled, i havn't even done pythagereum theory much.

23. erica.d Group Title

x^2+16x+64=x^2+x^2+14x+49

24. Callisto Group Title

That is not Pyth. Thm. It's just simple multiplication of some factors. For instance, $x^2 = x \times x$$x^3 = x \times x \times x$ Similarly, $(a+b)^2 = (a+b) \times (a+b)$It can be expanded in this way: $(a+b)^2 = (a+b) \times (a+b) = a(a+b) + b(a+b)$Can you further expand and simplify it?

25. andriod09 Group Title

i can not see the equations from the eqtation button!!!!!!!!!!

26. Callisto Group Title

equation button is for you to type latex...

27. Callisto Group Title

*type in latex

28. andriod09 Group Title

yes, but i see: $\$$\\$][\\]$\$ thats what i see, i see evey single slash, all the brackets, the braces, everything

29. Callisto Group Title

\sqrt{x} = $$\sqrt{x}$$ and so on.. You can try these on the equation button. Though, back to your question, are you still having trouble with your question?

30. andriod09 Group Title

yes. and i see the \sqrt{x} = $$\sqrt{x}$$ like i see all the braces, the terms for them, and everything like that. my mathjax thing isn't working atm

31. Callisto Group Title

Can you see what I've typed in latex?

32. andriod09 Group Title

no. i see the equation as if you write it with out the button, like i don't see the (x)^2 i see the ()^{} and things like that. and yes, i still am having problems with my problem

33. Callisto Group Title

|dw:1348503516047:dw|

34. andriod09 Group Title

yes.

35. Callisto Group Title

Now, can you expand a(a+b) +b(a+b) ?

36. andriod09 Group Title

how?

37. Callisto Group Title

Distributing a into a+b and b into a+b

38. andriod09 Group Title

then??

39. Callisto Group Title

Expand it first.

40. andriod09 Group Title

how?

41. Callisto Group Title

a(a+b) = a(a) + a(b) = a^2 + ab Can you try b(a+b) now?

42. andriod09 Group Title

is it: b(a+b)=b(a)+b(b)=b^2+ba?

43. Callisto Group Title

Yes! Now combine them What is a(a+b) + b(a+b) ?

44. andriod09 Group Title

(a(a+b) = a(a) + a(b) = a^2 + ab)+(b(a+b)=b(a)+b(b)=b^2+ba)?

45. Callisto Group Title

Nope not really.. can you try again?

46. andriod09 Group Title

what would it be then?

47. andriod09 Group Title

@ash2326

48. andriod09 Group Title

@ganeshie8

49. andriod09 Group Title

@Callisto

50. andriod09 Group Title

@ash2326

51. andriod09 Group Title

52. andriod09 Group Title

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