Question

factorize:16x²+40xy+25y²​-1​

Answer 1

Answer:

(4x-5y)² -1

Step-by-step explanation:

16x²+40xy+25y² -1

= (4x)² + 2 × 4x × 5y +(5y)² -1

= (4x+5y)² - 1

Answer 2

Step-by-step explanation:

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16x²+40xy+25y²-1

$(4x + 5y)(4x + 5y)-1$

OR,

$(4x + 5y) </strong><strong>-</strong><strong>1</strong><strong>^{2}</strong><strong>$