Let `a,b,c,d, a in R` and satify the relations `a(b-c)^2+a_1bc=c-0 and a(b+c_1)^2+a_2bc_1+c=1` then which is true

Let a,b,c in R such that a^(2)+b^(2)+c^(2)=2bc,a^(2)+b^(2)+c^(2)!=0 . Then which of the following points lie on the line ax+by+c=0 , is : (A) (-1,2) (B) (1,2) (C) (-1,-2) (D) (2,-1)

If [(a,b),(c,-a)] is a square root of the 2xx2 identity matrix then a,b,c satisfy the relation (A) 1-a^2-bc=0 (B) 1-a^2+bc=0 (C) 1+a^2-bc=0 (D) 1+a^2+bc=0

If a,b,c are in A. P. then a/(bc), 1/c, 2/b will be in-

If a,b,c are in AP, then (a)/(bc),(1)/(c ), (2)/(b) are in

If a+b+c=2 and ab+bc+ca=1 then find (a+b)^2+(b+c)^2+(c+a)^2

a +b , b+ c 1- ab 1- bc o b, are in For a, b, CER1O), let AP. If ?, ? are the roots of the quadratic equation 2acx2 + 2abcx + (a + c) 0, then the value of 1 + ?)(1 + ?) is

If D=|(1,a,a^(2)-bc),(1,b,b^(2)-ca),(1,c,c^(2)-ab)| , then D is -