Find the product of `3l^(2)m,-5ml" and "-2l^(2)`

Find the product: (2m-l)(2l-m) ,

Find the product : (9m -2 l)(4l -3 m)

Find the product of the following pairs: -3l,-2m,

Find the ratio of: 250 mL to 2 L.

Find the acute angle vetween two straight lines whose direction cosines are given by the equations l-5m+3n=0 and 7l^(2)+5m^(2)-3n^(2)=0

Multiply the algebraic expressions ans find the product: 4l(l^2+ml+n )

Select a suitable identity and find the following products (2k + 3l)(2k + 3l)

Find the direction cosines of the two lines which are connected by the relations l-5m+3n=0 and 7l^(2)+5m^(2)-3n^(2)=0-

Find the value of int_(-l/2)^(+l/2)M/l x^(2) dx where M and l are constants .