Question

answer this following equations

Answer 1

Answer:I dont remember this

Step-by-step explanation:

Answer 2

1)

$a {}^{2} - b {}^{2} - ac + bc \\ (a + b)(a - b) - ac + bc \\ (a + b)(a - b) - c(a - b)$

2)

$(2a - b) {}^{2} - (2x {)}^{2} \\ (2a - b + 2x)(2a - b - 2x)$

3)