Question

2(x2 + 2xy) + 5 - xy + y?, when x = - 3
and y = + 5​

Answer 1

Answer:

the answer of the question is 4

Answer 2

Answer:

Answer

Let m should be subtracted from x

2

−xy+y

2

−x+y+3 to obtain −x

2

+3y

2

−4xy+1

x

2

−xy+y

2

−x+y+3−m=−x

2

+3y

2

−4xy+1

m=x

2

−xy+y

2

−x+y+3+x

2

−3y

2

+4xy−1

m=2x

2

−2y

2

+3xy−x+y+2