Question

8x²y² -5xy) + (4x²y²+ 4xy)=____

Answer 1

Subtracting,

7xy(x 2 −2xy+3y 2 )−8x(x 2 y−4xy+7xy 2 ) from 3y(4x 2 y−5xy+8xy 2 )

⇒  7x 3, y−14x

2 y 2 +21xy 3 −8x 3

y+32x 2

y−56x 2

y 2

 from 12x

2 y 2−15xy 2 +24xy 3

= (12x 2 y 2 −15xy 2 +24xy 3 )−(7x 3 y−14x 2 y 2+21xy )

3 −8x 3

y+32x

2y−56x

2 y^2

= 12x 2 y^ 2

−15xy 2

+24xy 3

−7x 3

y+14x

2 y 2−12xy

3+8x

3 y−32x

2 y+56x

2 y x 2

= 82x 2

y 2 +3xy 3 +x 3

y−15xy

2 −32x 2 y