can someone help me with radicals? please :(

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can someone help me with radicals? please :(

Mathematics
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hey
hello @Calle87
question?

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

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