Question

expand the numbers using square identities : ( 5p - 1 )²​

Answer 1

Answer:

Step-by-step explanation:

(a-b)square=a square+b square -2ab

(5p-2)square =5square +2square-2×5p×2=25p sq+4-20p

Answer 2

Step-by-step explanation:

By using formula ( a - b ) ² = a² + b² - 2ab

So , (5p - 1 )² = 25p² + 1 - 10p