Question

find the addition of following 5x²y,-6x²y,-9x²y​

Answer 1

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$5 {x}^{2}y, -6 {x}^{2}y, -9 {x}^{2}y \\ =5 {x}^{2} y + ( - 6 {x}^{2} y) + ( - 9 {x}^{2} y) \\ = 5 {x}^{2} y - 6 {x}^{2} y - 9 {x}^{2}y \\ = 5 {x}^{2}y - 15 {x}^{2}y \\ = - 10 {x}^{2}y$

Answer 2

Answer:

$\: \: \: \: \: 5 {x}^{2} y + ( - 6{x}^{2}y ) + ( - 9 {x}^{2} y) \\ = 5 {x}^{2} y - 6 {x}^{2} y - 9 {x}^{2} y \\ = 5 {x}^{2} y - 15 {x}^{2} y \\ = - 10 {x}^{2} y$