For any integer n, the value of polynomial (n + 7) 2 - (n-3) 2 can () A. Divisible by 2n + 4 B. divisible by N + 2 C. divisible by 20 D. divisible by 10 and divisible by 2n + 4 | Math enthusiast | Mathematical art

For any integer n, the value of polynomial (n + 7) 2 - (n-3) 2 can () A. Divisible by 2n + 4 B. divisible by N + 2 C. divisible by 20 D. divisible by 10 and divisible by 2n + 4

From the meaning of the question: (n + 7) 2 - (n-3) 2 = 20 (n + 2), and because the divisor cannot be 0, the value of polynomial (n + 7) 2 - (n-3) 2 can be divided by 20

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