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## anonymous one year ago Evaluate |c 2 + b 2|, given a = 5, b = -3, and c = -2.

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1. anonymous

help?

2. anonymous

answer is 10 positive 10 you want an explanation?

3. anonymous

@.Gjallarhorn. yes please

4. anonymous

so since c=-2, you multiply -2 and 2 together. what do you get?

5. anonymous

-4? @.Gjallarhorn.

6. anonymous

right now leave that off to the side and lets go to the other one

7. anonymous

since b=-3 you multiply -3 and 2 together and you get?

8. anonymous

-6

9. anonymous

good. now you gotta add both your results. so -4 + -6 =?

10. anonymous

making it positive 10

11. anonymous

good try but no. -4+ -6= -10

12. anonymous

but thats not our final answer. so you see how the equation has a line like this? >> |

13. anonymous

on both sides?

14. anonymous

yea

15. anonymous

that means whatever you get inside those lines, is measured as a distance from 0

16. anonymous

how many units away it is from 0.

17. anonymous

oh i thought it was the negatives canceiling each other out >.<

18. anonymous

so in |-6| -6 is 6 units away from 0. so your answer would be six in a question like this

19. anonymous

oh okay

20. anonymous

thats just an example

21. anonymous

so how many units is -10 away from 0?

22. anonymous

10 units

23. anonymous

right. so these are always positive. 10 is your answer . good job

24. anonymous

thanks

25. jdoe0001

hmm $$\large |c^2 + b^2|\qquad \begin{cases} a=5\\b=-3\\c=-2 \end{cases}\qquad ?$$

26. anonymous

no prob

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