Question

Add this. Please I will mark u as brainlist ​

Answer 1

Step-by-step explanation:

the answer is attached above I hope you have understood the question

Answer 2

Answer:

$- 28 {a}^{2} {b}^{2}$

Step-by-step explanation:

$- 3 {a}^{2} {b}^{2} - 52 {a}^{2} {b}^{2} + 4 {a}^{2} {b}^{2} + 23 {a}^{2} {b}^{2} \\ = {a {}^{2} } {b}^{2} (23 + 4 - 52 - 3) \\ = {a}^{2} {b}^{2} ( - 28) \\ = - 28 {a}^{2} {b}^{2}$