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

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

Find the product : (4k + 4m)(2m - 3k)

Write the statement as expression the product of 2,l,m.

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

Find the product of the following pairs : -9l, -11m

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

If (l_(1),m_(1),n_(1)),(l_(2),m_(2),n_(2)) are d.c's of two lines then find the value of (l_(1)m_(2)-l_(2)m_(1))^(2)+(m_(1)n_(2)-n_(1)m_(2))^(2)+(n_(1)l_(2)-n_(2)l_(1))^(2)+(l_(1)l_(2)+m_(1)m_(2)+n_(1)n_(2))^(2)

IF l,m,n are rational the roots of (m +n) x^2 -(l+m+n)x+l =0 are

If m = 1 is the slope of a line L, then the product of the slopes of non-parallel lines which are inclined at an angle of 60^(@) with L is

If (l,m,n) are the direction cosines of a line, find the maximum value of the product lmn.