math problem
1=4srt4+11
._. Do this in the same way I told you how to do the other thing
And it's not square root, there is 4 beside it this time
its not a suare root?! hat is it
@AZ i needa do my social studies, I'll be an observer
so it's not a square root a square root would be something like this \(\Large\sqrt[2]{100} = \pm10\) we assume that it's a 2 there so we also write it as \(\Large \sqrt{100} = \pm 10\)
1^(2)=[\root(4)(4q)+11]^(2)
it's 4th root which basically means we're trying to find something that multiplies with itself 4 times to give us that number
alright
so you know how if you had \(\sqrt{x} = 10\) we would do to the power of 2 on both sides? if we have something like \(\Large\sqrt[4]{x} = 10\) then to solve for 'x', we have to do the power of 4 on both sides
its to the poer of 4 for my problem
that's because one of the rules for exponents is \(\Large a^{\left(\frac{1}{b}\right)} = \sqrt{a}\) and so if you do \(\Large (\sqrt{a}) ^b\) that's the same thing as \(\Large a^{\left(\frac{1}{b}\right) b} = a\)
so first, it says that h(q) = 1 that means we're looking for the 'q' that makes the h(q) = 1 so let's write the equation \(\Large 1 = \sqrt[4]{4q+11}\)
what do you get if you do to the power of 4 on both sides? On the right side, it should cancel out that \(\Large\sqrt[4]{~~}\) and on the left side, you'd have 1^4 = ??
1
good! so now we went from \(\Large 1 = \sqrt[4]{4q+11}\) \(\Large 1^4 = \left( \sqrt[4]{4q+11} \right)^4\) \(1^4 = 4q+11\) and we finally get \(1= 4q+11\) so can you solve for q?
4*-3?
no, first subtract 11 on both sides what do you get?
1-11 and 11-11?
yes
what is that equal to
-10 and 0
Good! So we had \(1= 4q+11\) we subtract 11 on both sides \( 1 - 11 = 4q+11 - 11\) and we get \( -10= 4q\) now how do you solve for q?
im not sure
so we want to get 'q' all by itself so we have 4 times q we need to move the 4 to the other side, right? 4 is being multiplied with q we need to do the opposite of that to 4 on both sides what is the opposite of multiplication?
division?
Yes! So we have to divide by 4 on both sides so we can get 'q' all by itself so divide 4 on both sides, what do you get?
-0.4?
mhmm are you sure? what is -10 / 4 remember we're dividing 4 on both sides so -10 divided by 4 -10/4 =
-2.5
voila! and all done!
thanks
no problem
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