6х-3х^2=0 3х^2-12х=0 7y^2+y=0 4y-y^2=0 х^4-17х^2+16=0 х^4+5^2-36=0 х^4-8^2+16=0 х^4+5x^2+9=0
1) x(6-3x)=0 [x=0 [x=0 [-3x=-6 [x=2 2) x(3x-12)=0 [x = 0 [x=0 [3x = 12 [x=4 3) y(7y+1)=0 [y=0 [y = 0 [7y = -1 [y = -(1/7) 4) y(4-y)=0 [y = 0 [y = 4