Question

by subtracted
—5x²+7y²—4xy from 3xy+2y²—3x²
​

Answer 1

Step-by-step explanation:

3xy+2y2-3x2-(-5x2+7y2-4xy)

3xy+2y2-3x2-5x2-7y2+4xy

3xy+4xy-2y2-7y2-3x2-5x2

8xy-9y2-8x2

Answer 2

Answer:

$- 5 {x}^{2} + 7 {y}^{2} - 4xy \\ - 3 {x}^{2} + 2 {y}^{2} + 3xy \\ changing \: the \: sign \: of \: 2nd \:{ eq}^{n} \\ - 5 {x}^{2} + 7 {y}^{2} - 4xy \\ \: \: \: 3 {x}^{2} - 2 {y}^{2} - 3xy \\ answer \\ - 2 {x}^{2} + 5 {y}^{2} - 7xy$