# Πάρτη Κοηλί

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bio website location age 13 member for 11 months seen 4 hours ago profile views 919

Hi, I am not really a per— oh wait. I am this 13 year old guy who relaxes all the time — not sure if has a real purpose in life.

I like to study mathematics and physics and will do some work on these interesting fields in the future. Currently targeting physics.

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 Apr14 comment Factoring a long expression in the form $(a+b)^3 + (c - b)^3 - (c+b)^3$Nice alternative. Thanks. Apr14 comment Factoring a long expression in the form $(a+b)^3 + (c - b)^3 - (c+b)^3$@Easy wow, that is epic! Gotcha! Apr14 comment Factoring a long expression in the form $(a+b)^3 + (c - b)^3 - (c+b)^3$$= -(b+a)(3c^2 - 3bc + b^2 + ac - ba + 2ac + a^2) Apr14 comment Factoring a long expression in the form (a+b)^3 + (c - b)^3 - (c+b)^3@Jay Ah, I didn't notice that. Apr14 revised Factoring a long expression in the form (a+b)^3 + (c - b)^3 - (c+b)^3deleted 1 characters in body; edited title Apr14 comment Factoring a long expression in the form (a+b)^3 + (c - b)^3 - (c+b)^3$$(c - b)^3 - (a + b)^3 = \left(c - a - 2b\right)\left(c^2 - 2cb + ac - ba + bc + a^2 + 2ab + b^2 \right)$ Is that correct? Apr14 asked Factoring a long expression in the form $(a+b)^3 + (c - b)^3 - (c+b)^3$ Apr13 accepted $x = \sqrt[3]{3} + \frac{1}{\sqrt[3]{3}}$, what is $3x^3 - 9x$? Apr13 comment $x = \sqrt[3]{3} + \frac{1}{\sqrt[3]{3}}$, what is $3x^3 - 9x$?Ah, so $3x^3 = 10 + 9x$ and I want to get the value of $3x^3 - 9x$, which gives me $10 + 9x - 9x = 10$. Great solution! Apr13 asked $x = \sqrt[3]{3} + \frac{1}{\sqrt[3]{3}}$, what is $3x^3 - 9x$? Apr12 revised The inverse function of $e^{x^2}$added 198 characters in body Apr12 comment The inverse function of $e^{x^2}$Brian is right as always. I have a tendency to neglect things. Apr12 answered The inverse function of $e^{x^2}$ Apr12 comment Mathematical Expressions; School HomeworkErr... do you know about the distributive property? Apr12 comment Mathematical Expressions; School HomeworkNo, I have shown you that it is $7$ step-by-step. Apr12 revised Mathematical Expressions; School Homeworkadded 16 characters in body; edited tags; edited title Apr12 answered Mathematical Expressions; School Homework Apr12 answered How can I prove that $xy\leq x^2+y^2$? Apr7 reviewed Approve suggested edit on Is this sum equal to 1? Apr4 comment Trigonometrical limit $\lim\limits_{ x\to 0 } \frac{\sin x - x\cos x}{x^3}?$@DominicMichaelis Hmm, I think l'Hospital is much more fundamental, so I cannot expect myself to know that before l'Hospital...