" 21."(a+b)^(3)-a-bquad " 22."x^(2)+y

If a : b = x : y , then show that (a^(2) + b^(2)) : a^(3)/(a + b) : : (x^(2) + y^(2)) : x^(3)/(x + y)

If a/b = x/y , then show that (a+b) (a^(2)+b^(2))x^(3) = (x+y)(x^(2)+y^(2))a^(3)

(a-b)x+(a+b)y=a^(2)-2ab-b^(2)(a+b)(x+y)=a^(2)+b^(2) Solve for omoloss- multibicatiomby the method 2.2.

The straight lines x+2y-9=0,3x+5y-5=0 , and a x+b y-1=0 are concurrent, if the straight line 35 x-22 y+1=0 passes through the point (a , b) (b) (b ,a) (-a ,-b) (d) none of these

The straight lines x+2y-9=0,3x+5y-5=0 , and a x+b y-1=0 are concurrent, if the straight line 35 x-22 y+1=0 passes through the point (a , b) (b) (b ,a) (-a ,-b) (d) none of these

The straight lines x+2y-9=0,3x+5y-5=0 , and a x+b y-1=0 are concurrent, if the straight line 35 x-22 y+1=0 passes through the point (a , b) (b) (b ,a) (-a ,-b) (d) none of these

The straight lines x+2y-9=0,3x+5y-5=0 , and a x+b y-1=0 are concurrent, if the straight line 35 x-22 y+1=0 passes through the point (a , b) (b) (b ,a) (-a ,-b) (d) none of these

The straight lines x+2y-9=0,3x+5y-5=0 , and a x+b y-1=0 are concurrent, if the straight line 35 x-22 y+1=0 passes through the point (a). (a , b) (b) (b ,a) (-a ,-b) (d) none of these

If A and B are coefficients of x^(11) in the expansion of (1+x)^(22) and (1+x)^(21) respectively,then (A)/(B) is equal to

Divide: 6x^3y^2z^2\ \ by \ \ 3x^2y z (2) 15 m^2n^(3\ ) by \ 5m^2n^2 (3) 24 a^3b^3\ by -8a b (4) -21\ a b c^2 by \ 7a b c