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Startseite » Forum » I have the following problem: 2t^2 + 5t + 2. 2t 2
I have the following problem: 2t^2 + 5t + 2. 2t 2
Schüler
Tags: MATH
 
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Tag! I have the following problem: . is a positive whole number. explain why this expression can never have a value that is a prime number. I have factorized it to give me: where do I go from there? I absolutely do not know. I know that prime numbers can only be factorized into 1 and the number itself. I do not understand wha they ask of me other than factoring. Danke im Voraus |
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have factorized it to give me: Great! And in case of a prime number, one of those factors must be either or . Quite impossible with don't you think so , too? Set both factors equal to one after the other, and solve for Then recall that is said to be a whole positive number. If you drop the requirement for being positive, then there are actually solutions for prime and prime . |
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thanks! |
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roman, buddy, as an afterthought to the question, where would you classify this question according to math skills. under what math topic/subject would you list? thanks |
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I would see it as an example of "solving quadratic equations". Of course, you also need to know that the only divisors of a prime number are 1 and the number itself, and also how to factor a quadratic term. That is how to determine its zeros ("quadratic equation") and how to use them to finally factor the term. |
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vgl: www.frustfrei-lernen.de/mathematik/abc-formel.html |
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