" 6."20x^(2)-45

Fractorise: 20a ^(2) - 45 b ^(2)

factorize : 20x^2-45

Factorize the following expressions 20x^2-45

When the origin is shifted to (-2,-3) and the axes are rotated through an angle 45^(0) , find the transformed equation of 2x^(2)+4xy-5y^(2)+20x-22y-14 = 0 .

Write the simplified forms of the following in ascending and descending orders: 2x^(2)+2-5x+7x^(2)-20x+5+18x-6x^(2)

If log_(10)(x^(2)-6x+45)=2, find the value of x.

Divide: 9m^(5)+12m^(4)-6m^(2) by 3m^(2)24x^(3)y+20x^(2)y^(2)-4xy by 2xy

The locus of the mid-point of the chord of contact of tangents drawn from points lying on the straight line 4x-5y=20 to the circle x^2+y^2=9 is : (A) 20(x^2+y^2)-36+45y=0 (B) 20(x^2+y^2)+36-45y=0 (C) 20(x^2+y^2)-20x+45y=0 (D) 20(x^2+y^2)+20x-45y=0

The locus of the mid-point of the chord of contact of tangents drawn from points lying on the straight line 4x-5y=20 to the circle x^2+y^2=9 is : (A) 20(x^2+y^2)-36x+45y=0 (B) 20(x^2+y^2)+36x-45y=0 (C) 20(x^2+y^2)-20x+45y=0 (D) 20(x^2+y^2)+20x-45y=0