`5m-3n=19,m-6n=-7`

4m+3n=18.3m-2n=5

Add: 5m-7n,3n-4m+2,2m-3mn-5

-7m-[3n-{8m-(4n-10m)}] simplifies to 11m-5n( b) 11m-7n(c)11n-7m(d)13n-11m

(m+n)(m+n)(m+n)(m-n)(m-n)(m-n)=m^(6)-n^(6) . (True/False)

Simplify : frac(x^(3m+2n) .x^(3m-8n))(x^(5m-6n)

Add: 5m - 7n, 3n - 4m + 2, 2m - 3mm - 5

If the direction ratios l, m ,n of the lines satisfy l-5m+3n=0, 7l^(2)+5m^(2)-3n^(2)=0 then the angle between the lines is

If 5m-n =3m +4n , then find the values of the following expression: (3m+4n)/(3m-4n)

4m+6n=54,3m+2n=28 .

IfI_(m , n)=int_0^(pi/2)sin^m xcos^n xdx , Then show that I_(m , n)=(m-1)/(m+n)I_(m-2,n)(m ,n in N) Hence, prove that I_(m , n)=f(x)={((n-1)(n-3)(m-5)(n-1)(n-3)(n-5))/((m+n)(m+n-2)(m+n-4))pi/4 when both m and n are even ((m-1)(m-3)(m-5)(n-1)(n-3)(n-5))/((m+n)(m+n-2)(m+n-4))}