Find the value of x :- `2:3=4:x`

Find the value of x - (2-3x)/4+(3-2x)/5=2-x

Find the value of x if (-2/3)^4 div (-2/3)^3=(-3/2)^x

Find the value of x , y 2x+3y=6 3x-2y=4 .

Find the value of : 2x^(2)-3x+4 where x=2

Find the value of 3(x^2-2)+4x-8 when x=-2

Find the value of x and y : 2x+3y=5,3x+y=4

If x=2 and y=5 find the values of : 3x-4y

If 4cos^(2)x=3 and x is an acute angle, find the value of : cos3x

If x=5, find the value of : 2x^(3)-4x^(2)-6x+25

(i) If 2x + 1 is a factor of 2x^2+ ax- 3, find the value of a. (ii) Find the value of k, if 3x -4 is a factor of expression 3x^2+ 2x -k.