Question

Find the sum of
2x²y -3y²x +2xy -7 and -8x²y -5y²x +2st -15​

Answer 1

Answer:

$(2x^2y -3y^2x +2xy -7)+(-8x^2y -5y^2x +2xy -15)=-6x^2y-5y^2x+4xy-22$

Step-by-step explanation:

$(2x^2y -3y^2x +2xy -7)+(-8x^2y -5y^2x +2xy -15)$

Taking like term together

$2x^2y+(-8x^2y)+(-3y^2x)+(-5y^2x)+2xy+2xy+(-7)+(-15)\\ \\ -6x^2y-5y^2x+4xy-22$

Answer 2

Answer:

Required solution is -2{xy(3x+4y)+(xy+st)+9

Step-by-step explanation:

Given:

2x²y-3y²x+2xy-7 and -8x²y -5y²x +2st -15​

On adding both,

2x²y-3y²x+2xy-7 + (-8x²y) -5y²x +2st -15​

=2x²y+(-8x²y)-5y²x-3y²x+2xy+2st-7+15

= -(6x²y)-8y²x+2xy+2st+8

=-2xy(3x+4y)+2(xy+st)+18

=-2{xy(3x+4y)+(xy+st)+9}