Medal for help :)
Simplify the expression below (DIAGRAM)'

A.98
B.-14
C.14 ****My answer
D.392

Question

Medal for help :)
Simplify the expression below (DIAGRAM)'

A.98
B.-14
C.14 ****My answer
D.392

anonymous · Answer

|dw:1403304006532:dw|

anonymous · Answer

@vzfreakz @precal

anonymous · Answer

@iPwnBunnies

anonymous · Answer

@Compassionate

ipwnbunnies · Answer

Well, this question is sorta incomplete. The square root of 196 can be ±14. And the negative sign outside the square root will still make it ±14 .-.

anonymous · Answer

@Destinymasha

anonymous · Answer

@jim_thompson5910  Do u know if I'm correct ?

ipwnbunnies · Answer

.-. Not even recognizing my response.

anonymous · Answer

I'm going to say B, since -sqrt(196) would imply they want you to know the difference between something like sqrt(-4) and -sqrt(4)

anonymous · Answer

Sorry @iPwnBunnies  not sure which one it is , which one do you think it is ?

anonymous · Answer

@zepdrix what do u think b or c ? I'm confused

anonymous · Answer

@tHe_FiZiCx99

zepdrix · Answer

$$\Large\rm \sqrt{196}=14$$And then we have to put a negative in front, yes..?$$\Large\rm -\sqrt{196}=-14$$Understand? :o

anonymous · Answer

Thanks ALL OF YOU:)

zepdrix · Answer

$$\Large\rm \sqrt{196}\ne \pm 14$$The root of a constant value is defined to be the positive root.
I don't really understand why this is so, but it is.

ipwnbunnies · Answer

.-. But sqrt of 196 can also be -14.

ipwnbunnies · Answer

Because (-14)^2 = 196...?

zepdrix · Answer

@iPwnBunnies http://www.intmath.com/blog/16-how-many-answers/122 This is a really nice link discussing that idea :)