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Mathematics 17 Online
Erisgoddess:

Solve for t. https://mooreps.owschools.com/media/g_alg01_2016/8/51.gif

Erisgoddess:

need help

AZ:

so remember what we did last time? moving things around

AZ:

this time, let's move `t` to the other side and then we move that 72 on to the other side

AZ:

that way we can have t all by itself on one side of the equal sign

AZ:

Sound like a good plan to you?

Erisgoddess:

yep

AZ:

\(\sqrt{52} - t = 72\) so what do you get when you add `t` to both sides?

Erisgoddess:

|dw:1614986675200:dw| ?

Erisgoddess:

t i mean

AZ:

is that supposed to be a t or a 2 on the right hand side

AZ:

Presto! You got it then!

AZ:

Have you learned how to simplify radicals yet? Because we can simplift sqrt(52)

Erisgoddess:

ok

AZ:

can you find two numbers that multiply to give you 52? since it ends with a 2, you know that you can divide it by 2

Erisgoddess:

13?

AZ:

13 and what other number

Erisgoddess:

4

AZ:

good! so here's a rule that you should know |dw:1614986898760:dw|

AZ:

so we said 52 is equal to 13 and 4 so we have |dw:1614986967566:dw| what goes under those square root signs?

Erisgoddess:

13 and 4 ?

AZ:

good! and 13 is a prime number so we won't be able to simplify it anymore but what about sqrt(4) is there a number that if you multiply it by itself will give you 4?

Erisgoddess:

2

AZ:

Well done!

AZ:

That means we can re-write \(\sqrt{52}\) as \( 2\sqrt{13}\) and so we get

AZ:

|dw:1614987223477:dw|

Erisgoddess:

yay

AZ:

Good job! :D

Erisgoddess:

thank you

AZ:

It was my pleasure!

Erisgoddess:

:)

jhonyy9:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @AZ Created with RaphaëlReply Using Drawing \(\color{#0cbb34}{\text{End of Quote}}\) perfect explained - congrats !

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