1 (3x+0,5)^2
2 (-4x+7y)^2
3 (x^2+y^3)^2

1) 9x^2+3x+2.5

2)16x^2-56xy+49y^2

3) x^4+2x^2y^3+y^6

1) (3x+0,5)^2

(3х+)^2

9х^2+3х+

2) (-4x+7y) (-4x+7y)^2

(7у-4х)^2

49у^2-56ху+16х^2

3) (x^2+y^3)^2

(х^2)^2+2х^2y^3+(y^3)^2

x^4+2x^2y^3+y^6