Question

simplify 2xy(xy²-3x²y)+7x³y² and verify the result for x=4 and y=-1/2

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

(x+y)(2x+y)+(x+2y)(x−y)

=x(2x+y)+y(2x+y)+x(x−y)+2y(x−y)

=2x

2

+xy+2xy+y

2

+x

2

−xy+2xy−2y

2

=(2+1)x

2

+(1+2−1+2)xy+(1−2)y

2

=3x

2

+4xy−y

2