Question

ANY ONE WANNA HELP
√10 - 4√10
A. 5√10
B. -3 √10
C. -3 √20
D. 5√20
i think the answer is D

Answer 1

Pretend that √10 is an x. What's x-4x?

Answer 2

Or you can factor \(\sqrt{10}\) out.

Answer 3

okay that works

Answer 4

you mean like 10 - 4x?

Answer 5

Exactly what I wrote above - what's x-4x?

Answer 6

What's 1-4?

Answer 7

- 3

Answer 8

Right! So what's 1x-4x?

Answer 9

-3x

Answer 10

Right! And we said x is √10, so instead of -3x you have...?

Answer 11

is the answer -3 √10

Answer 12

It is :)

Answer 13

yay thnxs