Question

what must be added to -7xy+3y²-13x²y² to get --10X²y²
+5y²-3xy​

Answer 1

Answer:

Make sure that all words are spelled correctly.

Answer 2

Step-by-step explanation:

$let \: the \: number \: b e \: a \\ atq \\ a + ( - 7xy + 3y { }^{2} - 13x {}^{2} y {}^{2} ) = - 10x {}^{2} y {}^{2} + 5y {}^{2} - 3xy \\ a - 7xy + 3y {}^{2} - 13x {}^{2} y {}^{2} = - 10x {}^{2} y {}^{2} + 5y {}^{2} - 3xy \\ a = - 10x {}^{2} y {}^{2} + 13x {}^{2} y {}^{2} + 5y {}^{2} - 3y {}^{2} - 3xy + 7xy \\ a = 3x {}^{2} y {}^{2} + 2y {}^{2} + 4xy \\ a = 2y {}^{2} + 4xy + 3x {}^{2} y {}^{2}$