(6x+2)(x-1)-5x(x-3) = 6x^2 - 6x + 2x - 2 - 5x^2 + 15x = x^2 + 11x - 27y(y-2)-(1-y)(4y+2) = 7y^2 - 14y - 4y^2 - 2 + 4y = 3y^2 - 10y - 2(c+10)^2 = c^2 + 20c + 100(x-1)^2 = x^2 - 2x + 14(5-y)+(3-2y)^2 = 20 - 4y + 9 - 12y + 4y^2 = 4y^2 - 16y + 29
(6x+2)(x-1)-5x(x-3) = 6x^2 - 6x + 2x - 2 - 5x^2 + 15x = x^2 + 11x - 2
7y(y-2)-(1-y)(4y+2) = 7y^2 - 14y - 4y^2 - 2 + 4y = 3y^2 - 10y - 2
(c+10)^2 = c^2 + 20c + 100
(x-1)^2 = x^2 - 2x + 1
4(5-y)+(3-2y)^2 = 20 - 4y + 9 - 12y + 4y^2 = 4y^2 - 16y + 29