Question

add 4xy²-7x²y, 12x²y - 6xy² and 3x²y + 5xy²​

Answer 1

$\begin{gathered}4x {y}^{2} - 7 {x}^{2} y + 12 {x}^{2} y - 6 x{y}^{2} - 3 {x}^{2} y + 5x {y}^{2} \\ = 4x {y}^{2} - 6x {y}^{2} + 5x {y}^{2} - 7 {x}^{2} y + 12 {x}^{2} y - 3 {x}^{2} y \\ = 9x {y}^{2} - 6x {y}^{2} - 10 {x}^{2} y + 12 {x}^{2} y \\ = 3x {y}^{2} + 2 {x}^{2} y\end{gathered}$

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Answer 2

Answer:

first write aĺl three given terms with + sign, add like terms