4- Find the value of `x` if `2x^2+9x+10=0`

In each of the following find the value of 'a' : (i) 4x^(2)+ax+9=(2x+3)^(2) (ii) 9x^(2)+(7a-5)x+25=(3x+5)^(2)

Find the values of x , if |[3x,7], [2, 4]|=10

Find the value of x if |[1,2,9],[2,x,0],[3,7,-6]|=0

In each of the following find the value of 'a' 4x^(2) + ax + 9 = (2x+ 3)^(2)

In each of the following find the value of 'a' 4x^(2) + ax + 9 = (2x-3)^(2)

If 3x + 4y= 16 and xy= 4 , find the value of 9x^(2) + 16y^(2)

If 3x-7y=10\ and x y=-1, find the value of 9x^2+49 y^2

Find the proper subsets of {x: x^2 -9x -10 = 0} .

Find the value of : 3x^(2)+9x^(2)-x+8 where x=-2

Find the value of x if: (-9)/(16)xx(4)/(3)=(x)/(2)