4x^2+12x+9 9x^2-24xy+16 y^210xy+0,25 x^2+100y^2

Question

4x^2+12x+9
9x^2-24xy+16 y^2
10xy+0,25 x^2+100y^2

Answer 1

4х^2+12х+9=(2х+3)^2 9х^2-24ху+16у^2=(3х-4у)^2 10ху+0,25х^2+100у^2=(0,5х+10у)^2