# SOLUTION: which expression is prime number? a.x2+4x+3 b.x2+5x+6 c.x2+6+8 d.none of the above

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 Click here to see ALL problems on Divisibility and Prime Numbers Question 458820: which expression is prime number? a.x2+4x+3 b.x2+5x+6 c.x2+6+8 d.none of the aboveFound 2 solutions by MathLover1, richard1234:Answer by MathLover1(6634)   (Show Source): You can put this solution on YOUR website! A prime number (or a prime) is a natural number that has exactly two distinct natural number divisors: 1 and itself, and it be a whole number than . The smallest twenty-five prime numbers (all the prime numbers under 100) are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97 a. solutions: or b. or c. so, the answer is: d.none of the above Answer by richard1234(5390)   (Show Source): You can put this solution on YOUR website!The phrase "prime number" is reserved only for positive integers, not polynomial expressions. However, if you mean "which expression is a *prime polynomial*" that makes more sense (prime polynomial is a polynomial that cannot be factored into linear factors with integer coefficients). We can see that a and b factor to (x+1)(x+3) and (x+1)(x+5) respectively. I have to assume you mean x^2 + 6x + 8 for c), which factors to (x+2)(x+4). So the answer is d), none of the above.