anonymous
  • anonymous
can someone help me with radicals? please :(
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
hey
anonymous
  • anonymous
hello @Calle87
anonymous
  • anonymous
question?

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anonymous
  • anonymous
its this. @Calle87
1 Attachment
anonymous
  • anonymous
okay whats the question
anonymous
  • anonymous
its in the attachment. @christiano123
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anonymous
  • anonymous
ok, so i have row d done
anonymous
  • anonymous
\[\sqrt{18}+2\sqrt{75}-\sqrt{48}\]
anonymous
  • anonymous
okay c: @Calle87 thanks.
anonymous
  • anonymous
so with radicals you can simplify each one by splitting them into smaller radicals
anonymous
  • anonymous
\[\sqrt{18}=\sqrt{9}\sqrt{2}=3\sqrt{2}\]
anonymous
  • anonymous
like the square root of 18, is a decimal so you break it down and use a number that equals to 18 like 9x2 and since its still big you can simplify 9x3? @Calle87
anonymous
  • anonymous
\[2\sqrt{75}=2(\sqrt{25})(\sqrt{3})=2(5)\sqrt{3}=10\sqrt{3}\]
anonymous
  • anonymous
ya see what i did?
anonymous
  • anonymous
\[\sqrt{9}\sqrt{2}\]
anonymous
  • anonymous
whats the square root of 9?
anonymous
  • anonymous
3 @Calle87
anonymous
  • anonymous
so 2 cant be simplified but 9 can oh i see
anonymous
  • anonymous
ya they dont want decimals
anonymous
  • anonymous
you want the largest possible square root with the smallest
anonymous
  • anonymous
ie 9 and 2 for 18
anonymous
  • anonymous
aha i just dont understand the last one were it has y @Calle87
anonymous
  • anonymous
ok so the last one,
anonymous
  • anonymous
yea @Calle87 the y's confuse me with the exponents.
anonymous
  • anonymous
\[3(\sqrt{2y})(\sqrt{y^2})\]
anonymous
  • anonymous
\[\sqrt{2y^3}=\sqrt{2y}\sqrt{y^2}\]
anonymous
  • anonymous
see what i did?
anonymous
  • anonymous
and what if there is a number on the outside of the sqrt and one on the inside? do you just bring the outside one down and fin the sqrt of the inside? @Calle87
anonymous
  • anonymous
\[3(\sqrt{2y})(\sqrt{y^2})\]
anonymous
  • anonymous
what is the square root of y^2?
anonymous
  • anonymous
is it y?
anonymous
  • anonymous
yes!! :)
anonymous
  • anonymous
\[3(\sqrt{2y})(y)\]
anonymous
  • anonymous
\[3y \sqrt{2y}\]
anonymous
  • anonymous
first expression is simplified
anonymous
  • anonymous
can you do the 2nd?
anonymous
  • anonymous
oh i get it is the second one A? i think it is c: @Calle87
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anonymous
  • anonymous
of the last row
anonymous
  • anonymous
the last one? @Calle87
anonymous
  • anonymous
it is c
anonymous
  • anonymous
the second one is C
anonymous
  • anonymous
the last row is E
anonymous
  • anonymous
fourth row is D
anonymous
  • anonymous
oh i thought it was a because of the 3 and the 4 sqrt
anonymous
  • anonymous
what are you asking?
anonymous
  • anonymous
because i saw the second one say 3y sqrt 4y and i thought it was the first one because it said 3 sqrt 2 because 4's sqrt is 2.
anonymous
  • anonymous
so you are having problems with the second row?
anonymous
  • anonymous
no i got an a c: thanks :D
anonymous
  • anonymous
ok, so no more?
anonymous
  • anonymous
yea no more thanks :D i understand them now c:
anonymous
  • anonymous
cool! great job @ahoymewmew

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