Question

125 - 45b2 please help me ​

Answer 1

Step-by-step explanation:

I take 5 common and then factories it I think it becomes 5((5-3b) (5+3b)

I think it is helpful for you

Answer 2

Step-by-step explanation:

Given expression is 125 - 45 b²

It can be written as

(5×5×5) - (3×3×5×b²)

=>5[(5×5) - (3×3×b²)]

=>5[(5² - (3b)²]

we know that a²-b²=(a+b)(a-b)

=>5(5+3b)(5-3b)

125 - 45 b²=5(5+3b)(5-3b)