2x(x++1)(x-2)=

a. -x^2 - 7x -2

b. -x^2 + 5x +2

c. -3x^2 -5x +2

d. -3x^2 -5x -2

e. -3x^2 +5x -2

(i need to know how to solve it not just the answer )

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )