SOLUTION: I need to select at least two odd numbers, two even numbers and zero for a formula that yields prime numbers...one such formula is x -x + 41. Select some numbers for x, sub
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Question 405538: I need to select at least two odd numbers, two even numbers and zero for a formula that yields prime numbers...one such formula is x -x + 41. Select some numbers for x, substitute them in a formula and see if prime numbers occur. Try to find a number for x that when substituted in the formula yields a composite number
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
I need to select at least two odd numbers, two even numbers and zero for a formula that yields prime numbers...one such formula is x -x + 41.
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Select some numbers for x, substitute them in a formula and see if prime numbers occur.
f(x) = x^2-x+41
odd: f(3) = 9-3+41 = 47 is prime
odd: f(7) = 49-7+41 = 83 is prime
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even:f(4) = 16-4+41 = 53 is prime
even:f(6) = 36-6+41 = 71 is prime
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zero: f(0) = 41 is prime
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Try to find a number for x that when substituted in the formula yields a composite number
f(41) = 1681 which is 41^2
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Cheers,
Stan H.
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