If `(a-5)^2+(b-c)^2+(c-d)^2+(b+c+d-9)^2=0`, then the value of `(a+b+c)(b+c+d)` is :

If   ( a -5 )^2 + ( b - c )^2 + ( c - d )^2 + ( b + c + d - 9 )^2 = 0 , then find the value of ( a + b + c ) ( b + c + d ) is

If a : b = c : d then the value of (a^(2) + b^(2))/( c^(2) + d^(2))

For real a, b and c if a^(2) + b^(2) + c^(2) = ab + bc + ca , then find the value of (a + b + c)^(2) A. 9a^(2) B. 81 a^(2) C. 27 a^(2) D. 24 a^(2)

If [(2a+b, a-2b),(5c-d, 4c+3d)]=[(4,-3),(11,24)] , then value of a + b – c + 2d is:

(a+ b + c- d)^2-(a-b-c+d)^2 =?

If a:b=c:d then value of (a^(2)+b^(2))/(c^(2)+d^(2)) is

If a : b = 2 : 5, b : c = 4 : 7 and c : d = 9 : 14, then the value of a : b : c : d is : यदि a : b = 2 : 5, b : c = 4 : 7 और c : d = 9 : 14, तो a : b : c : d कितना है ?

If [(2a+b,a-2b),(5c-d,4c+3d)]=[(4,-3),(11,24)] then the value of a+b-c+2d is (a) 8 (b) 10 (c) 4 (d) -8