Question

4-7(a-b) -15(a-b)^2 ​

Answer 1

Answer:

$4 - 7(a - b) - 15 {(a - b)}^{2}$

$(a - b)( - 3 - 15(a - b))$

$(a - b)(18b - 18a)$

Answer 2

Answer:

$4 - 7(a - b) - 15(a - b) {}^{2} \\ 4 - 7a + 7b - 15(a {}^{2} + b {}^{2} - 2ab) \\ 4 - 7a + 7b - 15a {}^{2} - 15b {}^{2} + 30ab$