Question

. Evaluate 3 + √x + 7 - √3x when x = 9.

Answer 1

the √ covers x + 7

Answer 2

Let's do this again!

Answer 3

and 3x

Answer 4

ok!

Answer 5

So let me simplify it for you.

3+Sqrt(9+7)-Sqrt(8x9) .... What do you get?

Answer 6

3 + 4.123 - 5.196

Answer 7

Don't get to the decimals! Just tell me in the radical format.

Answer 8

so we'll have 3+sqrt(16)-Sqrt(72) .... Right?

Answer 9

Sorry sorry should be 3+sqrt(16)-Sqrt(27)

Answer 10

ok.. 3 + √16 - √27

Answer 11

Yup! Now Simplify!

Answer 12

3 + 4.123 - 5.196

Answer 13

Well... Square root of 16 is just 4! So 3+4-Sqrt(27) ... From there we'll get 7+sqrt(27)

Answer 14

ok

Answer 15

so 7 + 2?

Answer 16

We can even go more... Now we can simplify \[\sqrt{27}\] so we'll have \[\sqrt{9*3}\] then we'll get \[7+3\sqrt{3}\] as our final answer :)

Answer 17

wouldnt it be 7 - 3√3?

Answer 18

Actually you right... it's - ... didn't see it!

Answer 19

ok np!

Answer 20

so 7-\[3\sqrt{3}\]

Answer 21

OK now i need the same question in decimal form.

Answer 22

Alright great... So let's go back to our original problem!

Answer 23

so we got \[7-\sqrt{2}\]

Answer 24

...... Sqrt(27) i meant

Answer 25

ok