9x^(2)-3x-20

Simplify (x+4)/(3x+4y) xx (9x^(2) - 16y^(2))/(2x^(2) +3x-20)

x^(3)-3x^(2)-9x+20 is

Subtract 7x^(3)+3x^(2)+8x+16 from 9x^(3)+6x^(2)-6x+20

Factorise: (i) x^(3)-2x^(2)-x+2 (ii) x^(3)-3x^(2)-9x-5 (iii) x^(3)+13x^(2)+32x+20 (iv)

Express each of the following as a rational expression. (x^(2)-5x+6)/(x^(2)-9x+20)+(x^(2)-3x+2)/(x^(2)-5x+4):

Find the interval in which f(x)=x^(3)-3x^(2)-9x+20 is strictly increasing or strictly decreasing.

Find the interval in which f(x)=x^(3)-3x^(2)-9x+20 is strictly increasing or strictly decreasing.

Find the interval in which f(x)=x^(3)-3x^(2)-9x+20 is strictly increasing or strictly decreasing.

Find the interval in which f(x)=x^(3)-3x^(2)-9x+20 is strictly increasing or strictly decreasing.