The perimeter of a triangle is `9m^2-2n+8` and its two sides are `4m^2+3n` and `7m^2+5n-12` Find the third side.

The degree of polynomial 5m^2n-3 is………….

If the sides of a triangle are b - 3a + 2c , a + 3b - 3c and 2a - b + c , then find its perimeter .

Two equal sides of an isosceles triangle are given by 7x-y+3=0 and x+y=3 , and its third side passes through the point (1,-10) . Find the equation of the third side.

If two sides of a triangle are represented by x^2_7xy+6y^2=0 and the centroid is (1,0) then the equation of third side is

If m and n are two distinct numbers such that m >n, then prove that m^2-n^2 ,2mn and m^2+n^2 is a Pythagorean triplet.

If the direction cosines of two lines are l_(1), m_(1), n_(1) and l_(2), m_(2), n_(2) , then find the direction cosine of a line perpendicular to these lines. a) l_(1)+l_(2),m_(1)+m_(2),n_(1)+n_(2) b) l_(1)-l_(2),m_(1)-m_(2),n_(1)-n_(2) c) m_(1)n_(2)-m_(2)n_(1),n_(1)l_(2)-n_(2)l_(1),l_(1)m_(2)-l_(2)m_(1) d) l_(1)+2l_(2),m_(1)+2m_(2),n_(1)+2n_(2)

If the sides of a triangle are b-3a+2c, a+3b-3c and 2a-b+c, then find its perimeter.