Question

Solve the equation. If necessary, round your answer to the nearest tenth.

x2 = 324

A. –18, 18

B. 18

C. –162, 162

D. 162

Answer 1

its best to write x squared as x^2

Answer 2

That's how the site put it.

Answer 3

the answer is +/- squared root of 324

Answer 4

hmm - poor site!

Answer 5

Okay so when you have x2 it means x*2

So we have x*2=324

Now we have to find out what times 2 can = to 324.

Simplify both sides of the equation.
2x=324

Step 2: Divide both sides by 2.
\[\frac{ 2x }{ 2 }= \frac{ 324 }{ 5 }\]

\[x=162\]

Answer 6

Answer: D

Answer 7

Thank you.

Answer 8

No problem :)

Answer 9

- thats an example of the difficulty that can be cuased:- x2 can be interpreted as ' 2 times x' or 'x squared'.