2x2+18x = 20 2x2+18x-20 = 0 x2+9x-10 = 0 (x+10)(x-1) = 0 x = -10 or x = 1
3x2 - 7x - 20 = (3x + 5)(x - 4)
An icosagon is a 20 sided polygon that has 20 vertices which is the plural of vertex
11x = 20x +1811x-20x=18x(11-20)=18-9x=18x=-2
(3x-4)(x+5)
2x2+18x = 20 2x2+18x-20 = 0 x2+9x-10 = 0 (x+10)(x-1) = 0 x = -10 or x = 1
3x2 - 7x - 20 = (3x + 5)(x - 4)
x=4 and x =7Improved Answer:-x2-18x-40 = (x+2)(x-20) when factored
3x2 -12x+24=-10x-20-3x2+6
An icosagon is a 20 sided polygon that has 20 vertices which is the plural of vertex
11x = 20x +1811x-20x=18x(11-20)=18-9x=18x=-2
3x2-7x-20 = (3x+5)(x-4) when factored
(3x + 5)(x - 4)
20
(x + 4)(3x - 5)
(3x - 5)(x + 4)
(3x-4)(x+5)