just_one_last_goodbye
  • just_one_last_goodbye
Can anyone help me? Medal and Fan
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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just_one_last_goodbye
  • just_one_last_goodbye
Hey @satellite73 give me a sec
just_one_last_goodbye
  • just_one_last_goodbye
\[\sqrt{18} + \sqrt{2}\]
Nnesha
  • Nnesha
what are factors of 18 ?

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just_one_last_goodbye
  • just_one_last_goodbye
Which statement is true about the expression? It is rational and equal to 3. It is rational and equal to 4. It is irrational and equal to 3 multiplied by the square root of 2. It is irrational and equal to 4 multiplied by the square root of 2.
just_one_last_goodbye
  • just_one_last_goodbye
Factors of 18 are 6 x 3
just_one_last_goodbye
  • just_one_last_goodbye
2 x 9
Nnesha
  • Nnesha
^ better one of number must be perfect square root |dw:1438785939285:dw| now take square root of 9
just_one_last_goodbye
  • just_one_last_goodbye
OK
just_one_last_goodbye
  • just_one_last_goodbye
What now?
Nnesha
  • Nnesha
square root of 9 = 3 \[\huge\rm 3\sqrt{2}+\sqrt{2}\] square root of common in both terms so take it out
just_one_last_goodbye
  • just_one_last_goodbye
So A correct?
just_one_last_goodbye
  • just_one_last_goodbye
since it's equal to 3?
Nnesha
  • Nnesha
how is it equal to 3 ?
just_one_last_goodbye
  • just_one_last_goodbye
9 = 3 x 3
Nnesha
  • Nnesha
when you take out sqrt from 3sqrt{2} what will u have left ?
just_one_last_goodbye
  • just_one_last_goodbye
OH I see now so it's C?
Nnesha
  • Nnesha
in other words divide both terms by common factor which is square root 2 \[\frac{ 3\sqrt{2} }{ \sqrt{2} }+\frac{ \sqrt{2} }{ \sqrt{2} }\]\\[\sqrt{2}(?????)\] sqr{2} divide by square root 2 = ?
just_one_last_goodbye
  • just_one_last_goodbye
Is it 2?
Nnesha
  • Nnesha
\[\frac{ \sqrt{2} }{ \sqrt{2} }\] i said divide not multiply :=)
just_one_last_goodbye
  • just_one_last_goodbye
1?
Nnesha
  • Nnesha
yes right so when you take out sqr{2} from sqrt{2} 1 is left |dw:1438786438226:dw| when you take out square root of 2 from 3sqrt{2} 3 is left so now combine 3+1 = answer
just_one_last_goodbye
  • just_one_last_goodbye
4
Nnesha
  • Nnesha
yes right so 4sqrt{2}
just_one_last_goodbye
  • just_one_last_goodbye
Thanks so much @Nnesha
Nnesha
  • Nnesha
my pleasure.

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