Question About Square Roots And Exponents Below Will Medal!
what is |dw:1459974389174:dw|
14.69
can you tell me how you got that?
1^3 square root -216
@Mehek14 @Daniellelovee @Daniee_Bruhh
@Atsie @HarleyQuinn98 @rebeccaxhawaii
Hmm if we take 2, and multiply it by itself three times,\[\large\rm 2\cdot2\cdot2=8\]Here is another way we can write this,\[\large\rm 2^3=8\]This also lets us know that the `cube root` of 8 is a single 2,\[\large\rm \sqrt[3]{8}=2\]Ok let's look for other `perfect cubes`, other than 8, because that's not the one we need here.
\[\large\rm 2^3=8\]\[\large\rm 3^3=27\]\[\large\rm 4^3=64\]\[\large\rm 5^3=125\]\[\large\rm 6^3=216\]Ah we found it!
okay, so is the answer 6 then? @zepdrix
When you take the cube root of a negative number, the negative comes out as well.\[\large\rm \sqrt[3]{-216}=-\sqrt[3]{216}=-6\]
so -6 then is my answer? @zepdrix
Yes.
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