Answer: A. To factorize the expression A = 2x² + 3xy - 7x - 5, we can group the terms as follows:
A = (2x² - 7x) + (3xy - 5)
Now we can factor out the common factor in each group:
A = x(2x - 7) + (3xy - 5)
This is the factored form of the expression A.
B. The coefficient of a in the expression 4a³ + 3a + 6 is 0, because there is no term in the expression that contains a as a factor (other than the term that is just the variable a itself). The coefficient of a term is the number that multiplies the variable in that term. Since there is no coefficient for the variable a, its coefficient is 0.
Explanation: