Question

what should be added to 6x³-5xy²+ 3 to get- 9x³ 7x²y +9​

Answer 1

Step-by-step explanation:

Let a should be added.

then,

$a = ( - 9 {x}^{3} + 7 {x}^{2} y + 9) - (6 {x}^{3} - 5x {y}^{2} + 3)$

$= - 9 {x}^{3} - 6 {x}^{3} + 7 {x}^{2} y + 5x {y}^{2} + 9 - 3$

$= - 15 {x}^{3} + 7 {x}^{2} y + 5x {y}^{2} + 6$

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