Question

.What should be added to x2 y – 2x + 3 to -7x2 y -1​

Answer 1

Step-by-step explanation:

let the unknown number be a

x^2y-2x+3+a=-7x^2y-1

a=-7x^2y-1-(x^2y-2x+3)

a=-7x^2y-1-x^2y+2x-3

a=-7x^2y-x^2y-1-3+2x

a=8x^2y-4+2x

it is the answer