Question

simplify -4√160

Answer 1

\[-4 \times \sqrt{160}\]
\[-4 \times \sqrt{4} \times \sqrt{40}\]
\[-4 \times 2 \times \sqrt{4} \times \sqrt{10}\]
you can do the rest, and tell me the answer.

Answer 2

8√40

Answer 3

but u can simplify the Sqrt 40 even further.

Answer 4

so keep going.

Answer 5

40=4*10
4=2*2
10=5*2

Answer 6

56√5

Answer 7

-4 x 2 x Sqrt 4 x Sqrt 10
-4 x 2 x 2 x Sqrt 10
what is the answer now?

Answer 8

160

Answer 9

what....

Answer 10

first of all what is -4 x 2 x 2?

Answer 11

16

Answer 12

wrong again, u are missing something.

Answer 13

look carefully.

Answer 14

it's not 4 x 2 x 2
but -4 x 2 x 2

Answer 15

-16

Answer 16

yes. now put the Sqrt 10 behind the -16.

Answer 17

-16√10

Answer 18

yes.

Answer 19

do u get it now?

Answer 20

Sqrt 10 can be simplified to Sqrt 5 and Sqrt 2, but there is no use because we cannot simply Sqrt 5 and Sqrt 2 any further, so we leave it as Sqrt 10.

Answer 21

thank you

Answer 22

your welcome.

Answer 23

and remember to look carefully, don't make silly mistake such as forgetting the negative sign. It's these little things that can cost u in tests/exams.