If `8a^2 + 50b^2 + 98 c^2 - 20ab-70bc -28ac = 0` then show that ` 2a = 5b = 7c`

If 8a^(2)+50b^(2)+98c^(2)-20ab-70bc-28ac=0 then show that 2a=5b=7c

If ∣ -a a^2 ab ac ab -b^2 bc ac bc -c^2 | = ka^2b^2c^2 , then k is equal to

If A=[[0 ,c,-b],[-c, 0, a],[ b, -a, 0]] and B=[[a^2, ab, ac],[ ab, b^2 , bc],[ ac ,bc, c^2]] , show that A B=B A=O_3xx3 .

If a = 24, b = 26, c = 28 , then the value of a^2 + b^2 + c^2 - ab - bc - ac will be

If a, b and c are distinct positive real numbers such that Delta_(1) = |(a,b,c),(b,c,a),(c,a,b)| and Delta_(2) = |(bc - a^2, ac -b^2, ab - c^2),(ac - b^2, ab - c^2, bc -a^2),(ab -c^2, bc - a^2, ac - b^2)| , then

(a+b+c)(a^(2)+b^(2)+c^(2)-ab-bc-ac)

If c^(2) ne ab and the roots of (c^(2)-ab)x^(2)-2(a^(2)-bc)x+(b^(2)-ac)=0 are equal, then show that a^(3)+b^(3)+c^(3)=3abc" or "a=0

| [-bc, b ^ (2) + bc, c ^ (2) + bca ^ (2) + ac, -ac, c ^ (2) + aca ^ (2) + ab, b ^ (2) + ab, -ab (ab + bc + ac), is = 64. then

If a^2+b^2+c^2=ab+bc+ac then the value of (a+c)/b is:- यदि a^2+b^2+c^2=ab+bc+ac हो, तो (a+c)/b का मान क्या होगा ?

If (a^(2)-bc)/(a^(2) +bc) + (b^(2)-ac)/(b^(2) + ac) + (c^(2)-ab)/(c^(2)+ab)= 1 then find (a^(2))/(a^(2) + bc) + (b^(2))/(b^(2) + ac) + (c^(2))/(c^(2) +ab)= ?