Math, asked by vinishasri13, 1 year ago

answer the above question


it's factorisation ​

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Answers

Answered by garvita86
1

Step-by-step explanation:

 = 81 - (2x  - 5y) {}^{2}  - 40xy \\  = 81 - (4 {x}^{2}  + 25 {y}^{2}  - 20xy) - 40xy \\  = 81 - 4 {x}^{2}  - 25 {y}^{2}  + 20xy - 40xy \\  = 81 - 4 {x}^{2}  - 25y {}^{2}  - 20xy

Answered by sharvilkadam
0

Here is your answer,refer to the attachment.

Last line has the answer.

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