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djyliett [7]
3 years ago
6

I can’t remember how to solve this?

Mathematics
1 answer:
labwork [276]3 years ago
3 0

Answer:

Step-by-step explanation:

\frac{(5.27+x)}{2} =-4.51,\frac{8.21+y}{2} = 1.37

(3.75,-5.47)

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What is the area of a rectangle with vertices at (−3, −1) , (1, 3) , (3, 1) , and (−1, −3) ?
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1 If a = p^1/3-p^-1/3<br>prove that: a^3 + 3a = p - 1/p​
alexandr402 [8]

Hello, please consider the following.

We know that

a = p^{\frac{1}{3}}-p^{-\frac{1}{3}}\\\\=p^{\frac{1}{3}}-\dfrac{1}{p^{\frac{1}{3}}}

And we can write that.

(p-\dfrac{1}{p})^3=(p-\dfrac{1}{p})(p^2-2+\dfrac{1}{p^2})\\\\=p^3-2p+\dfrac{1}{p}-p+\dfrac{2}{p}-\dfrac{1}{p^3}\\\\=p^3-\dfrac{1}{p^3}-3(p-\dfrac{1}{p})

It means that, by replacing p by p^{1/3}

(p^{1/3}-\dfrac{1}{p^{1/3}})^3=p-\dfrac{1}{p}-3(p^{1/3}-\dfrac{1}{p^{1/3}})\\\\\\\text{ So }\\\\a^3=p-\dfrac{1}{p}-3a\\\\\boxed{ a^3+3a=p-\dfrac{1}{p} }

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

4 0
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