Question

what should be added to 5x2 + 2xy to obtain 3x2+7xy​

Answer 1

Step-by-step explanation:

$5{ x}^{2} + 2xy - 2x {}^{2} + 5xy$

$5 {x}^{2} - 2 {x}^{2} + 2xy + 5xy$

$= 3 {x}^{2} + 7xy$

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