Question

Simplify the following expression. sq rt -65 sq rt -70

Answer 1

\(\sqrt{-65}*\sqrt{-70}\)?

Answer 2

there is no multiplication sign in the problem

Answer 3

imaginary numbers

Answer 4

am i wrong?

Answer 5

There's absolutely no imaginary numbers involved; \(\sqrt{-70*-65}\)

Answer 6

You'll get a positive number under the root, then you can simplify it.

Answer 7

its -45 and -70 sorry....I wrote it wrong

Answer 8

yeah there is, to simplify

Answer 9

Yeah, zepp is right.

Answer 10

\(\sqrt{-70} \sqrt{-45}=\sqrt{-70*-45}=\sqrt{3150}\)

Answer 11

plz tell me .Am I wrong?

Answer 12

answer: -5 sq rt 195

Answer 13

how did u get -45, clearly it is -65

Answer 14

http://puu.sh/BHro

Answer 15

fine

Answer 16

u win

Answer 17

You should get \(15\sqrt{14}\).

Answer 18

I wrote it wrong...the question is -45 and -70

Answer 19

actually ur wrong

Answer 20

-15 sq rt 15

Answer 21

@zepp remember!! \[\huge \sqrt{-a} \times \sqrt{-b} \implies i^2\sqrt{a \times b}\] ;)

Answer 22

Oh, I forgot a little minus? D:

Answer 23

well, at least i knew there were imaginary numbers, but i^2 = -1

Answer 24

\(-15\sqrt{14}\) There :D

Answer 25

Looks alike anyway :P

Answer 26

this question is confusing

Answer 27

I agree!!

Answer 28

zepp's answer is correct, case closed

Answer 29

ok I understand up to 3150, then what do I do?

Answer 30

its hard to explain... I just used my calculator

Answer 31

I have to show my work lol

Answer 32

it would be \[\sqrt{-70} i\]

Answer 33

can u tell me how u get that because I am really confused

Answer 34

ok use calculator. Do you have a scientific calculator?

Answer 35

no and I have to show my work

Answer 36

ok let me see

Answer 37

does the problem says to write to hundredth or something?

Answer 38

I multiplied -45 and -70 and got -3150, from here I am lost

Answer 39

no, it just says simplify

Answer 40

ok. since sqrt of 70 is not a integer, I leave it there and imaginary number is what you call sqrt of a negative number. To shows that, you do sqrt positive then i, indicating imaginary number. If this doesn't make sense to you, try asking others!:)

Answer 41

ok thank you very much!!