49y²-0,09=0 25x²-30x+9=0

49у^2-0,09=0 49у^2=0,09 у^2=0,09/49 у=√(0,09/49) у≈+-0,043 25х^2-30х+9=0 D/4=15^2-9*25=0 x=15/25=3/5=0,6

49y^2-0.09=0 49y^2 - 9/100 =0 49y^2=9/100 у^2= (+-3/70) у1=3/70 у2=-3/70 25х^2-30х+9=0 (5х-3)^2=0 25x^2-30x+9=0 (5x-3)^2=0 5x-3=0 x=5/3=0.6