Question

Checking work:
Square root subtraction
Image attached

Answer 1

sqrt(2)[6-3]
= sqrt(2)[3]

Answer 2

so I think the answer is 2

Answer 3

Ohh, so u combine the sqrt (2)?

Answer 4

Making it swrt (2) * 6-3?

Answer 5

yes, make sure you use paranthesis

Answer 6

\[6\sqrt2-3\sqrt2 = (6-3)*\sqrt2 = 3\sqrt2\]

Answer 7

(just testing math equation editor :)

Answer 8

Thats cool.

Answer 9

oh it's working now. good good

Answer 10

Why when I do this on a calculator, do I get a decimal?

Answer 11

because sqrt(2)= 1.414...

Answer 12

Is there a way to calculate subtraction and addition of sqrt. on a regular calculator? Or do I need a specific calculator?

Answer 13

I'm, obviously a neophyte, to this.

Answer 14

u can use ur computers cal or google cal

Answer 15

ok. cool.

Answer 16

Thats what messes me up. I get a decimal, when these questions are asking for answers like \[3\sqrt{2}\]

Answer 17

Is it possible to get those type answers on a calculator?

Answer 18

well not in a normal cal I guess

Answer 19

It is always good to do maths without a cal. makes more sense

Answer 20

Ok. I guess I'll have to get used to figuring them out without a calculator.

Answer 21

thank you!

Answer 22

good luck with everything

Answer 23

Could you check one more?

Answer 24

@d3v13

Answer 25

\[\sqrt{3}(5+8) + \sqrt{2}(-6+4)\]

Answer 26

do u get it?

Answer 27

I think so

Answer 28

do u add sqrts. just like regular numbers right? so \[\sqrt{3}+\sqrt{2}=\sqrt{5}\]?

Answer 29

no we are not allowed to add squareroots

Answer 30

you can check that using a calculator.
see whether \[\sqrt{3}+\sqrt{2}=\sqrt{5}\]

Answer 31

oh ok.

Answer 32

we can multiply or divide them, but can't add or subtact

Answer 33

ok. That makes sense!

Answer 34

The answer here then would be:\[13\sqrt{6}-2\sqrt{4}\]

Answer 35

yep

Answer 36

wait

Answer 37

nope that's not the answer

Answer 38

no, it's not. I think it would have to be: \[13\sqrt{3}-2\sqrt{2}\]

Answer 39

yep. that's the answer

Answer 40

thanks!