A composite number is a positive integer that can be formed by multiplying together two smaller positive integers. Equivalently, it is a positive integer that has at least one divisor other than 1 and...
Algebra: 1. (a + b) = a + 2ab + b 2. (a – b) = a – 2ab + b 3. (a + b) (a – b) = a – b 4. (x + a)(x + b) = x + (a + b)x + ab 5. (x + a)(x – b) = x + (a – b)x –...