Question

Solve the equation

Answer 1

did you try this one yet?

Answer 2

or no idea how to do it?

Answer 3

WHAT SHOULD I DO FIRST? AND ILL TRY TO FIGURE OUT THE REST :)

Answer 4

opp sry for the Caps

Answer 5

\[\sqrt{64}=8,8=8\]

Answer 6

DO YOU KNOW HOW TO SOLVE\[2x=8?\]

Answer 7

yes its 4

Answer 8

Why? You had to use the inverse operation of multiplication, right?

Answer 9

What's the inverse operation of square root?

Answer 10

If you know it, then you'll be able to solve\[\sqrt{x}=8.\]

Answer 11

@across Is it necessary to use inverse operations?

Answer 12

I'm just trying to connect the concept behind + and -, * and /, sqrt and ^2, etc.

Answer 13

ksaimouli how did u get that?

Answer 14

For example, in\[2x=8,\]to get rid of the \(2\) multiplying the \(x\), you had to divide by \(2\), which is the inverse of multiplication.

Answer 15

Or you can think on a number such as if multiplied by 2 gives you 8.

Answer 16

To get rid of the square root in\[\sqrt{x}=8,\]you have to raise both sides to the power of two:\[\sqrt{x}^2=8^2\implies x=64.\]

Answer 17

i think across is correct

Answer 18

That was almost right. Just remember that if you take the square root on one side of the equations you MUST take the square root on the other side.

Answer 19

Do what across told you.

Answer 20

Across why we cant do this \[\sqrt{x}=8,\sqrt{8}=\]

Answer 21

2.82

Answer 22

An equation is like a balance:

Answer 23

If you do something to one side of the balance, you have to do the exact same thing to the other side to keep it balanced.

Answer 24

ok got u

Answer 25

\[\sqrt{x}=8,\]would imply\[\sqrt[4]{x}=\sqrt{8}\](remember the balance)

Answer 26

I like the balance you drew, looks like an angry face! :D