1) 16х(2-х) + (4х-5) = 032x - 16x^2 + 4x - 5 = 0-16x^2 + 36x - 5 = 0
2) 9у(у+6) - (3у+1) = -19y^2 + 54y - 3y - 1 = -19y^2 + 51y - 1 = -19y^2 + 51y = 0
1) 16х(2-х) + (4х-5) = 0
32x - 16x^2 + 4x - 5 = 0
-16x^2 + 36x - 5 = 0
2) 9у(у+6) - (3у+1) = -1
9y^2 + 54y - 3y - 1 = -1
9y^2 + 51y - 1 = -1
9y^2 + 51y = 0