Question

how do i post a square root symbol in my question?

Answer 1

sqrt -
number

Answer 2

type "sqrt(3)" to mean \[\Large \sqrt{3}\]

Answer 3

sqrt - 49a^2

Answer 4

so \[\Large \sqrt{49a^2}\] ??

Answer 5

sqrt(49a^2)

Answer 6

yea

Answer 7

You can write 49 as 7^2. So 49a^2 = 7^2a^2 = (7a)^2


This means 49a^2 = (7a)^2


Do you see what to do next?

Answer 8

no im still learning these can u help?

Answer 9

sqrt(x)

Answer 10

The square root will undo the square. So effectively the two cancel out.


This means that the square root of (7a)^2 is 7a


So \[\Large \sqrt{(7a)^2} = 7a\]


So \[\Large \sqrt{49a^2} = 7a\]


This is assuming that 'a' is nonnegative.

Answer 11

my bad i typed it wrong its 49a^4

Answer 12

Then 49a^4 = (7a^2)^2

So \[\Large \sqrt{(7a^2)^2} = 7a^2\]

and \[\Large \sqrt{49a^4} = 7a^2\]

Answer 13

k thanks :)

Answer 14

yw

Answer 15

i got like 2-3 more questions would u mind helping?

Answer 16

sure, just post a new question to the left

Answer 17

ight