ANSWER ↓
========================
u can download the gauthmath app i promise it's very helpful here's the code if needed <u>3AFJF9</u>
<em>trust</em><em> me</em><em> its</em><em> very</em><em> helpful</em><em> </em><em>:</em><em>)</em>
Step-by-step explanation:
4x2 - 25b2
We can solve it by the squares so
(2x - 5b) (2x + 5b)
2) x2 - 81
The same case is here so
(x - 9) (x + 9)
<h3>
Answer: C) I and II only</h3>
===============================================
Work Shown:
Part I

----------
Part II

----------
Part III
