Math, asked by 21pradyu, 3 months ago

K) 25(x + y)² - 16(x-y)^2​

Answers

Answered by Anonymous
1

25 {(x + y)}^{2}  - 16 {(x - y)}^{2}  \\  \\  =  >  {[5(x + y)]}^{2}  -  {[4(x - y)]}^{2}  \\  \\  =  >  {(5x + 5y)}^{2}  -  {(4x - 4y)}^{2}  \\  \\  =  > (5x + 5y + 4x - 4y)(5x + 5y - 4x + 4y) \\ \\   =  > (9x + y)(x + 9y)

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