David correctly factored the expression m^2-12m - 64.

Which expression did he write?

(1) (m - 8) (m - 8) (3) (m - 16) (m + 4)

(2) (m - 8) (m + 8) (4) (m + 16) (m - 4)

Explain why

(m-16) (m+4)

Step-by-step explanation:

To factor a quadratic expression

First write the variable in each parentheses, then put negative / positive, after that ask yourself what numbers have the product of the coefficient of x^0 and the sum of x^1.