CBSE Class 8 Answered
Factorise: 16x² + 40xy + 25y²-1
Asked by Shawn | 10 Mar, 2016, 03:22: PM
Expert Answer
16x² + 40xy + 25y² - 1
So, 16x² + 40xy + 25y² = 1
This is of the form a2 + 2ab + b2 = (a + b)2
So, (4x)2 + 2(4x)(5y) + (5y)2 = 1
⇒(4x + 5y)2 = 1
⇒ (4x + 5y)2 - 1
Answered by Keravi Thanani | 10 Mar, 2016, 05:27: PM
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