1, it was wrong before, if it is to find x? -Really? That's what happened. Is it x? -No, I won't. . .

You can see the relationship between these two equations.

Subtract two terms, namely (x? +xy)-(xy+y？ )=3-(-2)

Equivalent to x? -Really? =5

2、x？ +x+3=5 Both sides of the equation are magnified twice at the same time.

Then 2(x? +x+3)= 10

Twice as large? +2x+6= 10

Then 2x? +2x=4

Then 2x? +2x-3=4-3= 1