Math, asked by khannapurepranaya200, 4 months ago

(6) 16x^2 + 40xy - 81 + 25y^2

Answers

Answered by mahekbala

3

Step-by-step explanation:

16x ^ 2 + 40xy - 81 + 25y ^ 2

= 16x ^ 2 + 40xy + 25y ^ 2 - 81 =

= (4x)^ 2 +2*4x*5y+(5y)^ 2 -81

= (4x+5y)^ 2 -9^ 2

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