Question

factories
9 (x-y) square -16(p-2q) square​

Answer 1

Answer:

$\red{9(x - y)^{2} - 16 {(p - 2q)}^{2} }$

Use a²-b² = (a-b)(a+b) to factor out the expression.

$\displaystyle \red{(3(x - y) - 4(p - 2q)) \times (3(x - y) + 4(p - 2q))}$

$\red{(3x - 3y - 4p + 8q) \times 3x - 3y + 4(p - 2q)}$

$\green{(3x - 3y - 4p + 8q) \times (3x - 3y + 4p - 8q)}$