Prove that (a,b + c), (b,a + c) and (c, a + b) are collinear.

Prove that the (a, b+c), (b, c+a) and (c, a+b) are collinear.

Prove that the (a, b+c), (b, c+a) and (c, a+b) are collinear.

Prove that the points (a, b + c), (b, c + a) and (c, a + b) are collinear.

Using determinants show that points A(a, b + c), B(b, c + a) and C(c, a + b) are collinear.

Prove that the points (a,b+c),(b,c+a) and (c,a+b) are collinear.

Prove that the points (a,b+c),(b,c+a) and (c,a+b) are collinear and find the equation of the straight line containing them.

Prove that the points (a+b+c),(b,c+a) and (c,a+b) are collinear.

Prove that the points (a, b + c), (b , c+a) and (c, a+b) are collinear and find the equation of the straight line containing them .

Show that the points (a,b+c),(b,c+a) and (c,a+b) are collinear.

Show that the points (a,b+c) (b,c+a) and (c,a+b) are collinear.