Question

solve
sqrt 5x-8=4
please 10 minutes left!

Answer 1

\[\sqrt{(5x - 8)} = 4\]

Is it the question???

Answer 2

yes

Answer 3

Try squaring both the sides, what will you get can you answer me???

Answer 4

is it 25x-56?

Answer 5

No rachel..

what is the square of :\[\sqrt{(5x - 8)}\] ??
Tell me after squaring this what will you get??

Answer 6

so im squaring the 5 and the 8?

Answer 7

No dear, it is already in square root..
Remember, square of :
\[\sqrt{x} = x\]

i.e:

\[(\sqrt{x})^2 = x\]

Getting or not??

Answer 8

no

Answer 9

what is the point you are not getting??

Answer 10

the squaring part

Answer 11

See, tell me what is the square of 5??

Answer 12

25

Answer 13

May I write is as :

\[5^2 = 5 \times 5\]

Yes or not??

Answer 14

yes

Answer 15

If instead of 5, it would be
\[\sqrt{5}\]

Then how will I write???

Answer 16

5?

Answer 17

\[\sqrt{5}^2 = \sqrt{5} \times \sqrt{5}\]

Answer 18

\[= \sqrt{5}\]

Answer 19

whats next??

Answer 20

So,what is the square of:

\[\sqrt{(5x - 8)}\]???